Ramsey Test Questions And Answers With Verified Solutions

What is the usual cause of overheating in high speed, grease-lubricated antifriction bearing - AnswerFaulty mounting practices How can too much wear in gears be reduced - Answer-Proper meshed Why are timing belts made with teeth - Answer-Doesn't slip The insert, or spider, used in flexible jaw couplings is meant to - Answer-Transmit torque and accept misalignment Clutches on machinery provide for disengaging and may also - Answer-Interrupt the power supply What determines the selection of gear reducer size - Answer-Torque and speed why do metal parts seize when there is a lack of lubrication - Answer-Metal to metal contact. (lube protects the bearing against corrosion) What causes lubrication oil to get milky - Answer-Mixing incompatible oils, contamination Why are heavy oils used - Answer-To reduce the friction from heat and wear What is viscosity? - Answer-The resistance of a liquid to flow Which machine condition can be determined by using oil analysis? - Answer-Various types of wear and take corrective action before fails Acids that form in lubricants affect performance are a result of - Answer-Oxygen from the air and high temperaturesShutting fluid discharge of an air operated reciprocating pump will cause the pump to - AnswerOverstroke What is the pressure on a fluid - Answer-Measurement of force per unit area on an object in the fluid What can you use to meet peak hydraulic system demands - Answer-A variable displacement pump Pressure in the hydraulic system can be controlled electrically by the use of - Answer-Metering the flow of fluid into or out Hydraulic valves are typically adjusted by - Answer-Flow control valve and adjustment the control Hydraulic reservoir suction lines can be raised for what - Answer-Create enough vacuum When air is compressed its temperature and....? - Answer-The pressure and temperature of the air increases The speed of a piston is determined by - Answer-Crankshaft stoke and the engine RPM Safe operating speed of an air motor is controlled by the - Answer-Air supply pressure Air line filters and lubricators should be installed at - Answer-closer where it is going to be used Solenoid valve fails to open, check what? - Answer-Normally closed (power to open) Centrifugal pumps, cavitation can result in? - Answer-Pump performance deterioration, mechanical damage, noise and vibrationCompressor running too hot, due to what? or do what? - Answer-Build up internal moisture and condensation A pilot flame detector can be what? - Answer-If flame is actually lit Air cooled condensers generally have? - Answer-Fan, ambient air