PLANT OILERS TENDERS HHC CIVIL SERVICE EXAM

PLANT /OILERS TENDERS (HHC) CIVIL SERVICE EXAM

NEWEST ACTUAL / QUESTIONS AND

ANSWERS.VERIFED/GRADED A+

T/F The viscosity of an oil used for gear lubrication is NOT very important. ----Answers--F

T/F Journal bearings are USUALLY cylindrical in shape, and support a rotating shaft. ----Answers--T

T/F Thrust bearings are generally used to prevent lengthwise motion of a rotating shaft. ----Answers--T

T/F The temperature of automotive-type bearings is usually held within safe limits by using a pressure-feed oil system. --- -Answers--T

T/F Hand oiling is USUALLY done with a lower viscosity oil than what us used in automatic lubricating systems. ---- Answers--F

T/F The grooves often found in plain sleeve bearings are USUALLY deep grooves with vertical sides. ----Answers--F

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T/F The piston rods are of a duplex directacting feedwater pump are generally lubricated by means of a bottle oiler. ---- Answers--F

T/F The reservoir of a mechanical forced-feed kubricator is usally refilled by hand. ----Answers--T

T/F If an oiler receives a salary of a $450 a month and saves 12% of this every month, in one year his total savings will amount to $648. ----Answers--T

T/F The decimal 0.875 written as a fraction would be 15/16. ---- Answers--F

T/F If it is said that an oil drum is 5/8 empty, it is the same as saying that this drum is 3/8 full. ----Answers--T

T/F If an 8" diameter pulley is driven by a 12" diameter pulley which rotates at 100 rpm, the driven pulley will rotate at 150 rpm. ----Answers--T

T/F Three pieces pf pipe each 2'8" long can be cut from a length of pipe 8' 1 3/8" long if there is a waste of 1/8" per cut. - ---Answers--T

T/F If 200 feet of a certain size pipe weighs 300 lbs., 60 feet od the same pipe will weigh 100 lbs. ----Answers--F 2 / 4

T/F The vacuum reading on a compound pressure gage is USUALLY measured in inches of mercury. ----Answers--T

T/F A flyball govenor is USUALLY used on an engine to maintain constant engine speed. ----Answers--T

T/F The proper rate of oil feed to a steam cylinder which has a 10-inch diameter piston is APPROXIMATELY one pint per day. - ---Answers--F

T/F Oil is USUALLY used to lubricate the bearings of a modern crtrifugal blower (such as an air conditioning blower unit). --- -Answers--F

T/F The worm and gear assembly unit of an elevator hoisting machine is USUALLY covered completely with oil for smooth operation. ----Answers--F

T/F Bearings that operate at high shaft speeds and low pressure normally require a lubricant that has a fairly low viscosity. ----Answers--T

T/F Drip-feed, wick feed, and wiper-type lubricating systems USUALLY feed lubricants by means of gravity instead of pressure. ----Answers--T

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T/F The indirect or atomization method has been generally accepted for introducing oil into the cylinders of steam engines. ----Answers--T

T/F A drip-feed lubricator is generally regulated by the size of the wick or the number of strands to be used in the wick. ---- Answers--F

T/F Oil manifolds, cups and pipes should be cleaned occasionally with a steam hose or with boiling hot soda water.----Answers--T

T/F A temperature of 100°C is equivalent to a temperature of 212°F. ----Answers--T

T/F Globe and angle valves are generally installed where operation is frequent and valve closure must be tight. ---- Answers--T

T/F Packing glands are USUALLY tightened when machinery is shut down overnight to prevent leakage. ----Answers--T

T/F Lubricant impregnated into most asbestos packings by manufacturers is USUALLY all that is needed for steam jobs. - ---Answers--T

T/F Packing in a centrifugal or reciprocating pump MUST be installed to completely stop leakage. ----Answers--F

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