Ramsay Maintenance Test Study Guide
MRA|130+ Questions and Correct
Answers,.
The best way to protect a pressure gauge from pressure surges is by
A. installing a shutoff valve.
B. disconnecting the gauge.
C. installing a plug valve.
D. using a snubber with the gauge. - AnswerD. using a snubber with the gauge.
Hydraulic lines should NEVER be constructed of
A. galvanized pipe.
B. Teflon-lined hose.
C. tubing.
D. black steel pipe. - AnswerA. galvanized pipe.
The purpose of a bypass line around a system filter is to
A. regulate pressure.
B. allow passage of flow in case of emergency.
C. offer less resistance to flow than bushings.
D. require less space than bushings. - AnswerB. allow passage of flow in case of
emergency.
If a cylinder has an input pressure of 50 psi and the BLANK SIDE of the piston is 5 sq.
inches, how much total force is applied by the piston?
A. 5 lbs.
B. 10 lbs.
C. 50 lbs.
D. 250 lbs. - AnswerD. 250 lbs.
A 40% pressure drop across an oil filter screen indicates that the
A. screen is broken.
B. line pressure is too low.
C. screen is dirty.
D. line pressure is too high. - AnswerC. screen is dirty.
An air-breather is installed on a fluid reservoir to
A. allow overflow.
B. cool the oil.
C. vent the reservoir.
D. control air pollution. - AnswerC. vent the reservoir.
,Which best describes the piston surface area of a single-rod, double-acting piston?
A. Spring-loaded
B. Unequal
C. Equal
D. Balanced - AnswerB. Unequal
What kind of valve allows flow in only one direction?
A. Needle
B. Check
C. Gate
D. Globe - AnswerB. Check
Pressure on a fluid is
A. higher at the inlet.
B. distributed equally in the fluid.
C. lower than input pressure.
D. higher than input pressure. - AnswerB. distributed equally in the fluid.
Shutting the fluid discharge of an air-operated reciprocating pump will cause the pump
to
A. reverse direction.
B. lift the relief valve.
C. overstroke.
D. stall. - AnswerC. overstroke.
The main difference between pneumatic cylinders and hydraulic cylinders is that
hydraulic cylinders
A. are more easily repaired.
B. require return lines.
C. are lighter in weight.
D. have a greater size selection. - AnswerB. require return lines.
Peak hydraulic system demands may be met by the use of
A. an accumulator.
B. a dual system.
C. a large reservoir.
D. an oversize pump. - AnswerA. an accumulator.
Air leaving the exhaust port of a four-way valve is directed to the
A. Aftercooler.
B. Atmosphere.
C. receiver.
D. Compressor. - AnswerB. Atmosphere.
, In troubleshooting a pneumatic system, you should first check
A. the air supply.
B. the solenoid valve.
C. for blown fuses.
D. For leaking cylinders. - AnswerA. the air supply.
The speed of a piston is determined by the
A. amount of metered outlet air.
B. size of the piston.
C. size of the solenoid valve.
D. Limit switch. - AnswerA. amount of metered outlet air.
The safe operating speed of an air motor is controlled by the
A. load.
B. speed reducer.
C. regulator
D. Limit switch. - AnswerA. load.
Install an air lubricator in a pneumatic system
A. before the separator.
B. after the regulator.
C. before the regulator.
D. After the separator, but before the regulator. - AnswerB. after the regulator.
Post heating welded metals
A. eliminates adhesions.
B. prevents oxidation.
C. provides more ductility.
D. avoids stresses from quick cooling. - AnswerC. provides more ductility.
Before opening the tank valve on an oxygen cylinder which is connected to an oxyfuel
cutting torch, you should turn the diaphragm screw
A. all the way out.
B. 12 of the way out.
C. 2/3 of the way out.
D. all the way in. - AnswerA. all the way out.
An advantage of brazing over welding is that with brazing,
A. dissimilar metals can be joined.
B. a hotter flame may be used.
C. no flux is used.
D. the fusion is better. - AnswerA. dissimilar metals can be joined.
MRA|130+ Questions and Correct
Answers,.
The best way to protect a pressure gauge from pressure surges is by
A. installing a shutoff valve.
B. disconnecting the gauge.
C. installing a plug valve.
D. using a snubber with the gauge. - AnswerD. using a snubber with the gauge.
Hydraulic lines should NEVER be constructed of
A. galvanized pipe.
B. Teflon-lined hose.
C. tubing.
D. black steel pipe. - AnswerA. galvanized pipe.
The purpose of a bypass line around a system filter is to
A. regulate pressure.
B. allow passage of flow in case of emergency.
C. offer less resistance to flow than bushings.
D. require less space than bushings. - AnswerB. allow passage of flow in case of
emergency.
If a cylinder has an input pressure of 50 psi and the BLANK SIDE of the piston is 5 sq.
inches, how much total force is applied by the piston?
A. 5 lbs.
B. 10 lbs.
C. 50 lbs.
D. 250 lbs. - AnswerD. 250 lbs.
A 40% pressure drop across an oil filter screen indicates that the
A. screen is broken.
B. line pressure is too low.
C. screen is dirty.
D. line pressure is too high. - AnswerC. screen is dirty.
An air-breather is installed on a fluid reservoir to
A. allow overflow.
B. cool the oil.
C. vent the reservoir.
D. control air pollution. - AnswerC. vent the reservoir.
,Which best describes the piston surface area of a single-rod, double-acting piston?
A. Spring-loaded
B. Unequal
C. Equal
D. Balanced - AnswerB. Unequal
What kind of valve allows flow in only one direction?
A. Needle
B. Check
C. Gate
D. Globe - AnswerB. Check
Pressure on a fluid is
A. higher at the inlet.
B. distributed equally in the fluid.
C. lower than input pressure.
D. higher than input pressure. - AnswerB. distributed equally in the fluid.
Shutting the fluid discharge of an air-operated reciprocating pump will cause the pump
to
A. reverse direction.
B. lift the relief valve.
C. overstroke.
D. stall. - AnswerC. overstroke.
The main difference between pneumatic cylinders and hydraulic cylinders is that
hydraulic cylinders
A. are more easily repaired.
B. require return lines.
C. are lighter in weight.
D. have a greater size selection. - AnswerB. require return lines.
Peak hydraulic system demands may be met by the use of
A. an accumulator.
B. a dual system.
C. a large reservoir.
D. an oversize pump. - AnswerA. an accumulator.
Air leaving the exhaust port of a four-way valve is directed to the
A. Aftercooler.
B. Atmosphere.
C. receiver.
D. Compressor. - AnswerB. Atmosphere.
, In troubleshooting a pneumatic system, you should first check
A. the air supply.
B. the solenoid valve.
C. for blown fuses.
D. For leaking cylinders. - AnswerA. the air supply.
The speed of a piston is determined by the
A. amount of metered outlet air.
B. size of the piston.
C. size of the solenoid valve.
D. Limit switch. - AnswerA. amount of metered outlet air.
The safe operating speed of an air motor is controlled by the
A. load.
B. speed reducer.
C. regulator
D. Limit switch. - AnswerA. load.
Install an air lubricator in a pneumatic system
A. before the separator.
B. after the regulator.
C. before the regulator.
D. After the separator, but before the regulator. - AnswerB. after the regulator.
Post heating welded metals
A. eliminates adhesions.
B. prevents oxidation.
C. provides more ductility.
D. avoids stresses from quick cooling. - AnswerC. provides more ductility.
Before opening the tank valve on an oxygen cylinder which is connected to an oxyfuel
cutting torch, you should turn the diaphragm screw
A. all the way out.
B. 12 of the way out.
C. 2/3 of the way out.
D. all the way in. - AnswerA. all the way out.
An advantage of brazing over welding is that with brazing,
A. dissimilar metals can be joined.
B. a hotter flame may be used.
C. no flux is used.
D. the fusion is better. - AnswerA. dissimilar metals can be joined.
