competence 8.3

通報

問題一覧

91. What is the end of shaft condition before the maintenance repair is carried out?

•Chamfered

92. What machine which can flatter surface on horizontal, vertical or angular plane?

•shaper machine

93. To prevent overheating and scoring of the shaft after repacking the stuffing box, which of the following procedures should be carried out ?

•Tighten the packing in small increments while the pump is operating

94. When renewing sections of pipe in a hydraulic system, it should always indicate the nominal pipe size of the piping?

•size for threaded connections

95. To repair a small electrical motor that has been submerged in salt water, you should,

•Wash it with fresh water and apply an externalsource of heat

96. What saw is more suitable for cutting metal in tight quarters ?

•Stab saw

97. Which of the listed tools should be used to remove a tapered roller bearing from a shaft?

•An arbor press

98. What kind of non-metallic mineral material which can withstand very high temperature and unaffected by steam petrol, paraffin, fuel, oil and lubricants?

•Asbestos

99. Which of the following sensing device in a pressure gauge using the Bourdon principle?

•Metal tube

100. After using a pipe cutter to cut a piece of pipe, the inside edge of the pipe should be

•deburred with a pipe reamer

101. What do you call that instrument use to take misalignment of the crankshaft?

•Deflection gauge

102. The lower water seal on a diesel engine wet cylinder liner must allow for liner expansion and contraction. This seal is most commonly a

•neoprene O-ring

103. What procedure must be formed before doing any maintenance on a hydraulic system, i.e. there is still stored energy in the accumulator?

•Bleed off the energy stored in the accumulator .

104. What is the purpose of improving the characteristics of a metal, especially steel, by heating it to a high temperature, though below the melting point, then cooling it, usually in air ?

•tempering

105. When the object you are cutting using a hand hacksaw is about to separate, how should you handle the hand hacksaw?

•Reduce cutting speed and pressure.

106. Safety valve gags should only be installed hand tight in order to prevent:

•bending of the valve stem

107. What is commonly used by a machinist and repairman in fixing files with coarsely teeth?

•Bastard cut

108. When saw blades are fixed in hand-held hacksaw frame,which of the following can move forward and reverse stroke?

•Rod

109. Which non-ferous alloy is most commonly used for heat exchanger tubes and possesses a high resistance to corrosion ?

•copper nickel

110. Which of the listed devices could be used as a ring groove cleaning tool during preparation for the installation of new rings if a piston ring cleaning tool was not available?

•A section of the removed compression ring

111. What should you avoid increased pressure on a drill as the drill point begins to break through the bottom of the work piece?

•Determine the exerted pressure by watching the pressure gauge

112. wHich one of the list should a flat chisel is the proper tools used for cutting?

•flat stock

113. Tubing is sized by:

•nominal outside diameter

114. Which of the listed metals can usually be drilled without lubrication ?

•brass

115. Which of the following process will a hacksaw blade start a cut more easily ?

•file a eick where the cut is to be started

116. Which of the following method listed would be most effective in repairing a steam cut on a seating surface of a super heater hand hole plate?

•Filling the cut by welding and then grinding it smooth

117. A pump shaft that is bent or distorted should normally.

•replaced with satisfactory spare

118. A hard brittle substance that are insoluble in water is called ?

•resin

119. Which of the following files having coarsely spaced teeth?

•Bastard cut

120. Why should two pipe joints be properly align before being connected?

•Misalignment of the joints will result to excessive

121. The drill size is marked on the ?

•shank

122. Low pressure steam is used to keep air from leaking into turbine casing along the turbine shaft. For this purpose, which of the following steam systems is used?

•Gland sealing steam system

123. What tool is mainly used in cutting metals?

•Hacksawing

124. Which of the following is the propertyof a material that enables it to resist strain when stress is applied?

•Strength

125. When drilling hole in a piece of work chuked in a lathe, where does you should mount the drill chuck?

•tailstock

126. In electric arc welding, what purpose does the electrode coating serve? .

•it provided a gas shield

127. This method is used for joining sheet metal and for attaching studs, rods and busses, etc., to plates

•resistance welding

128. Which of these metals can be drilled without lubrication ?

•brass

129. When tightening the nozzle nut of fuel injector , which of the following tools is used?

•Torque Wrench

130. If you suspect that a gage is sticking and giving an inccurate reading, you should

•replace the gage or have it calibrated

131. In general practice, which one makes common measurement on circular and curved surfaces in machine shops?

•spherical

132. Heat damage to fuel injection nozzles on small high-speed diesel engines can be prevented by_

•ensuring good metallic contact between nozzles and cylinder heads

133. A crack, located in the shell plating or deck plating of a ship, may be temporarily weld repair from increasing in length by.

•drilling a hole at each end of the crack and weld

134. In certain cases, a cylinder liner can be refinished rather than replaced. When properly honed, the

•liner surface should have a crosshatch pattern

135. Which one of the following measured with a pyrometer?

•Temperature

competence 4.1

competence 4.1

competence 4.2

competence 4.2

ERNO ENRIQUE JOMENTO · 4回閲覧 · 50問 · 1年前

competence 4.3

competence 4.3

4回閲覧 • 50問 • 1年前

competence 4.4

competence 4.4

competence 4.5

competence 4.5

competence 4.6

competence 4.6

competence 4.7

competence 4.7

ERNO ENRIQUE JOMENTO · 57問 · 1年前

competence 4.8

competence 4.8

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competence 5.1

competence 5.1

competence 5.2

competence 5.2

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competence 5.3

competence 5.3

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competence 6.1

competence 6.1

competence 6.2

competence 6.2

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competence 6.3

competence 6.3

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competence 7.1

competence 7.1

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competence 7.2

competence 7.2

66問 • 1年前

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competence 8.1

competence 8.1

45問 • 1年前

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competence 8.2

competence 8.2

45問 • 1年前

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competence 8.4

competence 8.4

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competence 9.1

competence 9.1

58問 • 1年前

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competence 9.2

competence 9.2

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competence 10.1

competence 10.1

40問 • 1年前

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competence 10.2

competence 10.2

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competence 10.3

competence 10.3

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competence 15.1

competence 15.1

competence 15.2

competence 15.2

competence 16.1

competence 16.1

competence 16.2

competence 16.2

competence 16.3

competence 16.3