marine engineering,control

8/8/2019 marine engineering,control

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1.When making heavy cuts on a milling machine how is the work piece secured?

2.When cutting threads on the centre lathe how is the required pitch determined?

3.The latest obtained system values are fed into the computer and compared with previous ones. Theanalysis obtained before has to be compared with the latest analysis. This is called ..................

4.What material is most commonly used for main sea water lines?

5.Vibration testing is an integral part of what type of maintenance?

6.How is the radius put on thread crests?

7.What tool fitting method is normally found in the tailstock of a centre lathe?

8.Which part of this machinery scanning system collects the incoming data from instruments andtransducers ?

9.What would be a suitable feed speed when rough turning brass in a centre lathe?

10.When using a straight tool on the shaping machine what effect does tool deflection have?

11.What is a Grub Screw used for?

12.The operating function of the valve on which this pneumatic valve motor is fitted will be ..............


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13.If a short taper section is required how is this best achieved on the centre lathe?

14.Suppose that in the system drawn the water inflow Q1 increases so that the float is pushed up by thewater to level L'. The value of level L' is called the .....................

15.How is the zero setting of this temperature transmitter adjusted ?

16.Why is the speed of rotation of the lead screw adjustable on a centre lathe?

17.Which is the most suitable machine for boring a single cylinder bore?

18.When tapping holes on the radial drill, how is the tap prevented from breaking?

19.The feedwater valve and the feedwater by-pass valves are ................


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20.What is the difference between American pipe thread and BSP?

21.When thread cutting on the centre lathe where is the top rake tool angle?

22.By what parts is the outlet pressure Pu of this pneumatic transmitter directly controlled ?

23.What important periodical maintenance checks are required on nozzle/flapper assemblies ofpneumatic instruments ?

24.What does the term 'up milling' describe when using a horizontal milling machine?

25.If a fault occurs in this power supply system, the best and fastest way to locate this fault is by.......................


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26.When using a milling machine to reduce the thickness of a parallel key how is the material marked?

27.In the top integrator drawing the bellows fill with air through the Restrictor Valve 'R'. In theelectrical equivalent ..................

28.When would a collet chuck be used on a centre lathe?

29.What is Part No. 5 ?

30.What best describes the tool movement on a shaping machine?

31.The monitoring system that tests the plant for readings of the temperature, pressure etc. is called:

32.What is the most often used cutting fluid on machine tools?

33.When using a parting tool on the centre lathe what is the most important consideration?

34.If the valve wheel (5) is moving very freely, but you suspect that the valve is neither opening nor


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closing, what are you going to check first ?

35.As part of an automation schematic drawing, what kind of instrument might be fitted on themeasuring line as indicated on the top right drawing ?

36.When using a milling machine to reduce the thickness of a parallel key how is the work piece set uponce the material has been marked?

37.What is the purpose of the clapper box on a shaping machine?

38.When should an adjustable spanner be used?

39.Which machine tool would be used to cut male threads?

40.How can a bevel gear be cut on a milling machine?

41.When turning an irregular work piece in a centre lathe using a balance weight on the faceplate,what special precautions must be taken?

42.How does a bolt differ from a Set Screw?

43.The LSU's (Local Scanning Units) have to measure temperature, pressure, flow, level, RPM,torque, horsepower, circuit and salinity and do so via analog and digital tranducers. What is adigital transducer ?


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amplifier equivalent ?

49.What type of cutter would be used on a vertical milling machine?

50.What does the indexing dial indicate on a centre lathe?

51.Why is stainless steel swarf particularly hazardous?

52.What is a normal front clearance angle when boring?

53.What is a hydrometer used to check?

54.Which of the following operations would be carried out with a vertical milling machine?

55.Why would the stroke length be adjusted on a shaping machine?

56.What is item No. 1 of this pneumatic temperature transmitter ?

57.What is part No. 11 on this transmitter drawing ?


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58.What is a normal front clearance angle when cylindrical turning?

59.What is the relationship between cutting and return strokes on the shaping machine?

60.In what sequence do the unloader and automatic drain valves close on start-up of an automatic airstart compressor?

61.What precaution may be necessary when using the faceplate with an irregular shaped work piece ona centre lathe?

62.What is the purpose of the expansion tank ?

63.How would a large flat area be cut on a vertical milling machine?

64.What would be the result if after period of time the tension of spring S should weaken on thispneumatic amplifier ?

65.What effect has setting the tool too high on a centre lathe?


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66.Which of these requires the lowest cutting speed?

67.Which component of a general service air compressor requires most maintenance?

68.How is the range of this instrument adjusted ?

69.Which machine would be used to cut a worm shaft?

70.In automation, RTD & CV stands for:

71.Where is the true rake angle measured on a centre lathe tool?

72.Which machine tool uses a magnetic bedplate?

73.In service, a pump shaft becomes overheated. What effect will this have on the ball-bearing?

74.What is the main safety consideration when using the shaper?

75.Why are there several tool positions on a centre lathe tool post?

76.What alternative thread cutting procedure is available on the centre lathe?

77.Which of these materials is cut in a machine tool without cutting fluid?

78.As part of an automation schematic drawing, what kind of instrument might be fitted on themeasuring line as indicated on the top centre drawing ?

79.On a centre lathe there is a drive shaft with keyway alongside the lead screw, what is its purpose?


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80.On which part of this pneumatic transmitter does the pressure of the process (steam, oil, water) act?

81.What is the name for a milling machine capable of both vertical and horizontal milling?

82.Which machine tool would be used to cut bevel gears?

83.When turning a long work piece in the centre lathe what is the most frequent problem?

84.When turning a taper on a centre lathe what could be adjusted?

85.What are lathe beds manufactured from?

86.Explain the function of a capacitor that loads up compared with a bellow that fills up with air ?

87.Comparing this pneumatic control unit with the equivalent electrical amplifier. What takes the placeof the air restrictor passage used in the pneumatic nozzle/flapper unit in the electrical equivalent ?

88.What would be measured with a tachometer?


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89.On a shaping machine where is the tool post fitted?

90.What takes the place of the 20 psi input used by pneumatic nozzle/flapper units in this electricalamplifier equivalent ?

91.What cross section is the front saddleway on a centre lathe?

92.This is the drawing of a Machinery Monitoring and Alarm System. What is the heart and brain of

this Scanning Unit ?

93.What would be the drill point angle for drilling mild steel?

94.On a centre lathe with a lead screw pitch of 5mm it is required to cut a thread of pitch 2mm, what isthe required drive/driven gear ratio?

95.What instrument uses a Venturi?

96.What property must the work piece have to enable the use of a three-jaw chuck on the centre lathe?

97.Between which values (expressed in psi) can setting of the Sv (set value or desired value) bellow ofthis pneumatic P controller be affected?


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98.When machining a work piece in the centre lathe, what is the purpose of centre drilling the end ofthe work piece?

99.Which of these spanners is it preferable to use?

100.What approximate diameter is the work piece machined to before external thread cutting?

101.Which can be varied on the shaping machine?

102.How is a centtre lathe chuck usually fastened to the headstock?

103.On this pneumatic transmitter part drawing, which part is amplifying the signal ?

104.On a centre lathe what is a "live centre"?

105.What do the letters "PT" shown in this instrument symbol (drawn on the bottom line) indicate if foundin an automation schematic drawing ?

106.A pressure reducing valve works according to the principle of balance of forces, in this case the

force P2 acting on the membrane is in balance with the force of the ...................


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107.Where would you find this instrument on board a ship ?

108.What is the principle advantage of the three-jaw chuck on a centre lathe?

109.How is an end mill secured in the chuck?

110.What does a thermistor rely upon?

111.What is the usual method of checking the tool height on a centre lathe?

112.When cylindrical turning a 50mm mild steel bar what would be the chuck speed?

113.How is the cutting tool ground when thread cutting on the centre lathe?

114.What accounts for most inaccuracies in older centre lathes?

115.Why is one tube end a packed gland in tube coolers?

116.What does a broken or dotted line represent in automation schematic diagrams ? (the second linefrom top shown here)


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117.How is the tool set up when thread cutting on the centre lathe?

118.What top rake angle would be used for turning Mild steel?

119.In bolt sizes what does AF refer to?

120.Control valves in a controlled process can be either pneumatic, electrically or hydraulicallyoperated. What kind of medium is used to control this valve ? When is it used ?

121.What top rake angle would be used for turning cast iron?122.This automatic control system shows one temperature controller steering two valve motors (fitted indifferent process components) by using different working ranges. This is called ................... control.

123.Why does the output (instrument supply) pressure of a reducer fluctuate ?


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124.On a centre lathe, when turning without a centre, how much of the work piece may extend beyond thechuck?

125.What would a 'round nose' centre lathe tool generally be used for?

126.Which machine tool would be used to machine the bore on a multi cylinder block?

127.What is measured with a pyrometer?

128.When could a magnetic chuck be used on a centre lathe?

129.Pneumatic instruments have an air filter fitted so that any impurity present is removed. Where is thisfilter fitted ?

130.On the centre lathe what is the biggest advantage of turning between centres?

131.If a leak is suspected in a tube heat exchanger what should be checked first?

132.Which part adjusts the proportional band of this pneumatic transmitter ?


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133.When facing on a centre lathe, what controls the tool feed rate?

134.What safety shut-down devices will usually be found on modern air compressors?

135.When would a travelling steady be used on a centre lathe?

136.Where is the clapper box situated on the shaping machine?

137.What is the advantage of the swan neck design of a shaping machine cutting tool?

138.What provides auto feed on a shaping machine?

139.What is the normal test for leaking heat exchanger tubes?

140.Which machine tool would be used for accurate machining of distance pieces?

141.The valve positioner acts on the principle of the balance of forces. The tension ofpart........(..............) is to be in balance with the force of the controller pressure which acts on

part........... (.............).

142.Which machine tool would be used to machine pump casing wear ring landings?

143.What would be the drill point angle for drilling aluminium?

144.What is the name of the tool-mounting shaft on a horizontal milling machine?

145.How would a "V" slot best be cut on a Universal milling machine?


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146.At what temperatures would a pyrometer be used?

147.What is the main purpose of maintaining a record of pressures & temperatures?

148.When machining a long length of raw material on the centre lathe how is this accommodated?

149.A diesel engine block is made of ............... and does not permit welding.

150.Which machine tool would be used to cut straight gears?

151.How is stern tube wear down measured when in dry-dock?

152.Which of the following operations would be carried out with a horizontal milling machine?

153.When using a drill in a centre lathe, how is this fixed to the tailstock?

154.Zinc rods in a refrigeration system are found in the ..........

155.What is an Engineer's Stud?

156.What top rake angle would be used on a lathe tool for cutting medium carbon steel?

157.What adjusts the stroke length on a shaping machine?

158.What is the main advantage of one-piece working on the centre lathe?

159.When drilling what could account for an enlarged hole diameter?

160.Why must a close fitting, buttoned up overall be worn when using a lathe?

161.How is the work piece centred in a cantre lathe four-jaw chuck?

162.This is a ...................


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163.On a centre lathe, when turning between centres why may the tailstock centre require backing off?

164.When boring on the centre lathe, what is the most usual cause of chatter?

165.When should copper based anti-friction compound always be used?

166.What are hold down strips when used with the shaping machine?

167.Which of the following could be carried out in the shaping machine?

168.How can concentricity be affected when using a three-jaw chuck in the centre lathe?

169.What is the most important measurement to check when overhauling centrifugal pumps?

170.When using a centre lathe why should short sleeves or close fitting sleeves be worn?

171.What does the symbol shown on the fifth line from the top (a circle with a horizontal line through it)of the drawing indicated an automation schematic diagram ?

172.How should tight, cooler end covers be removed?

173.In an automated engine the center from which the ship's engine room is controlled is called:

174.What is the advantage of the four- jaw chuck on a centre lathe?

175.If on inspection, anodes are unworn what could be the reason?

176.How is a parallel surface achieved on a shaping machine?

177.Compensation wires are electrical conductors made of special metal alloy and have ascharacteristics that ....................


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178.On a horizontal boring machine how is the work piece set up to the boring bar?

179.On a centre lathe when must turning between centres be employed?

180.How do you adjust the zero setting on this commonly used electrical pressure transmitter?

181.Which is the filter of the instrument on this transmitter part drawing ?

182.How can a thread be cut without a chasing dial?

183.When cutting a steep helix in the centre lathe, as in multi start threads, what tool angle must bealtered?

184.How could drilling and tapping be carried on the centre lathe with an irregular work piece?

185.How is the surface gauge secured to the bed of a centre lathe?


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186.What is the sensing device in a pressure gauge using the Bourdon Principle?

187.What does the symbol drawn on the fourth line form the top (a blank circle) indicate in an automationschematic diagram ?

188.On which machine tool does the work piece not move?

189.

What instrument would be used for measuring fan suction pressure?

190.On this commonly used electric pressure transmitter, how will you adjust the range ?

191.On a centre lathe how can the chuck jaws be prevented from damaging the work piece?

192.What part of a pneumatic control system is this ?

193.What change is made for finish turning in a centre lathe?

194.On a centre lathe how is the work piece secured to the faceplate?


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195.How can vice jaws be checked for parallel on a shaping machine?

196.What does a non-articulated full line indicate in an automation schematic drawing ? (the third linefrom top shown here)

197.When using a parting tool in the centre lathe what prevents it from binding?

198.Which of these is NOT a positive locking device?

199.How is an angled face cut on the shaper?

200.When using the machine vice on the shaper what determines work piece position?

201.When would a faceplate be used on a centre lathe?

202.The span of this pneumatic transmitter is set by adjusting or tensioning ................

203.What item must be regularly inspected in SW heat exchangers?

204.What jointing material is used on engine exhausts or superheated steam lines?

205.What is the term when using multi tools on a single shaft on a horizontal milling machine?

206.Why is the centre lathe the most popular onboard machine tool?

207.Bimetallic strips can be used in the measurement of ................


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208.What would be a suitable feed speed when rough turning alloy steel in a centre lathe?

209.What is a parting tool used for on the centre lathe?

210.In which machinery can you not add oil when running?

211.What is the system that monitors plant pressures, temperatures etc.

212.The measuring signal obtained to carry out flow measuring is a Differential pressure signal. Thisis obtained by a certain medium flowing through a ................

213.What is the disadvantage of using clamps to secure work piece on the shaping machine?

214.Which machine tool would be used to drill and tap the end of a shaft?

215.Upon what is the movement of the rudder dependant, when a helm order is given ?

216.How is the tool height adjusted on a centre lathe?

217.Which of these requires the highest cutting speed?

218.Which machine would be used to cut a blind keyway in a shaft?

219.When cylindrical turning a 50mm brass bar what would be the chuck speed?

220.When would a three-jaw chuck not be used on a centre lathe?


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221.Which of the following would a simple dividing head be used for when using a milling machine?

222.When boring on the centre lathe how are tool angles affected?

223.What components of the Lubricating Oil Control System are shown here ?

224.What kind of valve is valve A, shown in the left bottom ?

225.On a centre lathe what advantage is there in using a mandrel on a bored work piece?

226.Which of these locking devices can be used more than once?

227.Which of these materials cannot be cut in a machine tool without cutting fluid?

228.When using a centtre lathe, what would be used for turning short tapers as in chamfers?

229.When is it permissible to use a hand file on a lathe?

230.Which machine tool would be used to machine large flat surfaces?

231.What could cause a taper when cylindrical turning on a centre lathe?

232.When using the centre lathe to drill a blind hole how is the depth checked?


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233.What top rake angle would be used for turning Aluminium in the centre lathe?

234.Which machine tool would be used to drill and tap an irregular casting?

235.How could an internal keyway be cut on a centre lathe?

236.The difference between the desired value (level L) and the measured value (level L') is called.......................

237.This drawing shows a simple mechanical controller controlling the water level in the tank. Level "L"is the DESIRED water level in the tank, in automation this is called the ..................

238.When repacking soft packed glands how should the joins be spaced?

239.Which is the exhaust or air vent port to the atmosphere shown on this pneumatic transmitter ?

240.hich important maintenance activity should you carry out on pre-tensioning hydraulic tools to ensuretheir continuous safe use ?


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241.How is the shaping machine head slide checked to be square to the table?

242.Which is the correct method for removing intact engineers studs?

243.What effect has setting the tool too low on a centre lathe?

244.A pressostat as well as a thermostat are sources of ................. type output signals ?

245.When used in instrumentation what does a potentiometer record?

246.Which machine tool would be used to finish machine crankpins?

247.What is the correct name of item No. 2 shown here ?

248.What should be adjusted if a taper is to be machined on a centre lathe?

249.What is measured with a manometer?

250.What is the purpose of a "chip breaker" on a centre lathe tool?

251.When using a centre lathe, when would a driver be used?

252.To which channel is the nitrogen-filled thermal bellow in this pneumatic temperature transmitterfitted ?


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253.What jointing material is most suitable for high-pressure steam lines?

254.Re-conditioning part 4 and part 7 of this valve using carborundum paste is called .........?

255.What is a gap bed lathe?

256.What does a thick articulated line represent in automation schematic diagrams ? (the top articulatedline shown here)

257.What is the most important item in thread cutting on the centre lathe?

258.What method does a Pneumercator gauge use?

259.When change gears are fitted to the back of the centre lathe headstock what are these for?

260.What is the primary function of the cutting fluid when using a machine tool?


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261.What is the most suitable tool for machining cast iron?

262.When using the shaping machine what is the advantage in using the vice with jaws parallel to thetool travel?

263.When should tubes be plugged on a tube heat exchanger?

264.What is part No. 1 ?

265.If cutting a mm thread on a non-metric centre lathe what gear wheel is required?

266.What is the most common method for securing the work piece when using the shaping machine?

267.On the centre lathe what is a collet chuck most suitable for?

268.What is meant by a 6" Centre Lathe?

269.Which machine tool would be used to cut an internal keyway in a gearwheel?


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