ALL QUESTIONS AND CORRECT ANSWERS |
VERIFIED ANSWERS | BRAND NEW VERSION!
A gear pump positive displacement pump is also known as a
A. Reciprocating pump
B. centrifugal pump
C. Rotary pump
D. Turbine pump ---------CORRECT ANSWER-----------------C. Rotary pump
In a centrifugal pump, "cavitation" can result in
A. a slight increase in discharge pressure.
B. a general improvement in pump performance.
C. a reduction in pump net positive suction head requirements.
D. pitting of the impeller. ---------CORRECT ANSWER-----------------C. a
reduction in pump net positive suction head requirements.
The chemical being pumped determines the required
A. casing materials.
B. impeller speed.
,C. casing size.
D. impeller size. ---------CORRECT ANSWER-----------------A. casing
materials.
In dealing with pumping, the term "static head" means the
A. energy demanded by piping system to overcome Friction loss.
B. kinetic energy in a flowing liquid.
C. vertical distance in feet from liquid level in suction tank to point of
free discharge.
D. gauge reading at pump suction plus velocity head. ---------CORRECT
ANSWER-----------------C. vertical distance in feet from liquid level in
suction tank to point of free discharge.
Dowl pins are place in the end caps of pump casing to maintain proper
A. Gear-end pump clearance
B. Meshing of gears
C. bearing placement
D. Alignment ---------CORRECT ANSWER-----------------D. Alignment
A positive displacement pump is a pump that
,A. has positive, unlimited suction capabilities.
B. discharges an equal amount of fluid each cycle.
C. permits positive control over discharge pressures.
D. is suitable only for pumping hydraulic fluids. ---------CORRECT
ANSWER-----------------B. discharges an equal amount of fluid each cycle.
Which is a quick opening valve?
A. Needle
B. Ball
C. Globe
D. Gate ---------CORRECT ANSWER-----------------B. Ball
When opening a high-pressure steam valve into a cold line, you should?
A. Open the valve slowly
B. Open the valve quickly
C. Open and close the valve several times
D. Preheat the line with a torch ---------CORRECT ANSWER-----------------
A. Open the valve slowly
A pipe fitting which has both internal and external threads is the
, A. union.
B. bushing.
C. reducer.
D. coupling. ---------CORRECT ANSWER-----------------B. bushing.
Which of the pipes listed would have the thickest wall?
A. Schedule 20
B. Schedule 40
C. Schedule 80
D. Schedule 120 ---------CORRECT ANSWER-----------------D. Schedule 120
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. ---------CORRECT ANSWER---------------
--D. using a snubber with the gauge.
Hydraulic lines should NEVER be constructed of