competence 8.4

通報

問題一覧

136. Which is the best indicator that a bearing is being properly lubricated ?

•oil temperature indicated by the bearing thermometer

137. What do you call the operation of machining a uniformly roughened or checked surface on round stock in a lathe?

•knurling

138. A dial indicator is used to measure ?

•shaft eccentricity

139. What tools has to be used for enlarging a hole after drilling operation?

•Countersinking tool

140. During routine maintenance inspection of a centrifugal pump, scoring on a pump shaft sleeve is detected.Which of the following action should be taken?

•Correct the cause of the scoring and repair the sleeve or replace with a new one

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

•Brass

142. Which of the listed types of gasket material should be used on high pressure fuel oil lines in a diesel engine ?

•Sheet asbestos

143. What happen if steel is tempered ?

•less brittle

144. Heat is defined as ?

•thermal energy in transition

145. What tool has to be used for enlarging a hole after a drilling operation?

•Countersinking tool

146. Which method is often used to detect external defects in welded metals?

•Visible dye penetrant

147..To avoid deformationwhen cutting thin sheet metal while using a handheld hacksaw, it should be placed between two

•blocks of wood

148. When a lathe is used for thread cutting, which determines the number of threads per inch produced by the lathe speed?

•lead screw and head stock spindle

149. Kinetic energy is associated with ?

•movement and relative velocity

150. Babbit is a metal alloy commonly used as the lining for?

•bearing

151. When using a hand held hacksaw the correct maximum rate of speed for cutting should be:

•40 to 50 strokes per minute

152. Labyrinth seals used to reduce leakage around a turbine shaft are constructed of

•machined packing strips or fins

153. An acceptable method of temporary repairs in the vessel hull is

•double-plater to be fitted

154. Before boring a blind tapered hole, a good shop practice to follow is

•drill to the small diameter

155. What fitting is ideal for connecting pipes with big diameters of equal length?

•Union

156. To minimize corrosion, fuel oil strainerdisks spacers blades are made of ?

•monel metal or stainless steel

157. In order to prevent overheating of the packing in the stern tube stuffing box,

•the gland is properly adjusted to permit a slight leakage of sea water

158. Rubber o-ring has an inside and outside diameter of 64mm and 74mm respectively, which of the following best describes the O-ring?

•the oring will fit to a 10 mm wide x 9 mm deep grove

159. The gaskets and the broken studs have been replacedon a tank manhole cover. Which of the following methods is satisfactory for testing the repair?

•Hose test the repaired area with a minimum od 100 psig water pressure

160. When copper plates are used for making gaskets, it is usually annealed by heating red cherry color, what is the complete process ?

•cooling slowly in air

161. What is the fusion of two metals joined together to produce a strong bind as one metal?

•Welding

162. What type of file will produce a fine finish when draw filing ?

•mill cut

163. If the drill point lips are ground at different angles, the drill will ?

•cut an oversized hole

164. To safely remove the piston rod packing from the steam end of a reciprocating pump, you should

•use a packing hook

165. During cutting in milling when the chips begin to produce long and continuous, it is best that the feed is

•away from you to correct alignment

166. When using centre lathe, why should you use short sleeves or close fitting sleeves be worn?.

•to prevent sleevesbeing caught up on work piece or chuck

167. Which of the following problems is the main source of fuel pump and injection system malfunctions?

•Air in the fuel system

168. Antifreeze solution containing ethylene glycol, should not be mixed with corrosion protection oils, as the resultant mixture ?

•may cause frothing

169. What is inert gas use as shielded gas in MIG and TIG welding?

•argon

170. If you are cutting external threads by hand and you start the die at an angle, what will happen to the external threads ?

•It will be cut crooked on the work.

171. An O-ring seal in a hydraulic system will begin to leak when it has lost its interference fit due to

•Compression set or wear

172. Which of the following propeller materials will not require stress relief treatment after minor repairs, straightening of the tips or the thinning of the blade edges?

•Nickel aluminum bronze

173. What operation can be done during external cleaning of boiler tubes in order to prevent the accumulation of carbon deposits?

•sootblowing

174. What is the terms rough, coarse, bastard, second cut smooth and dead smooth refer to?

•distance between the parallel cuts on the file

175. Boyle's law can best be defined as ?

•the volume of an enclosed gas varies invesely with the applied pressure provided the temperature remains constant

176. A pressure gauge pointer responding sliggishly to changes in pressure, should be repaired by

•cleaning the residue from gear teeth

177. What do you call a lathe dog fitted with a headless set screw?

•safety lathe dog

178. A follower rest should make use of a lathe to machine?

•Threads on long slender shafts

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

•to avoid catching on the tool post

180. Which material can be drilled at the highest speed?

•Aluminum

181. What is known as a welding done with a shielded or unshielded carbon or metal electrode

•Arc welding

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

57問 • 1年前

competence 5.1

competence 5.1

competence 5.2

competence 5.2

ERNO ENRIQUE JOMENTO · 53問 · 1年前

competence 5.3

competence 5.3

53問 • 1年前

competence 6.1

competence 6.1

competence 6.2

competence 6.2

ERNO ENRIQUE JOMENTO · 46問 · 1年前

competence 6.3

competence 6.3

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competence 7.1

competence 7.1

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ERNO ENRIQUE JOMENTO · 66問 · 1年前

competence 7.2

competence 7.2

66問 • 1年前

ERNO ENRIQUE JOMENTO · 45問 · 1年前

competence 8.1

competence 8.1

45問 • 1年前

ERNO ENRIQUE JOMENTO · 45問 · 1年前

competence 8.2

competence 8.2

45問 • 1年前

ERNO ENRIQUE JOMENTO · 45問 · 1年前

competence 8.3

competence 8.3

45問 • 1年前