Pneumatic Systems - Concepts and Components - MCQs with Answers

Pneumatic Systems – Concepts and Components – MCQs with Answers

1. Which of the following systems generate more energy when used in industrial applications?

a. hydraulic systems
b. pneumatic systems
c. both systems generate same energy
d. cannot say

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2. Which type of compressor requires a reservoir for compressed air and why?

a. rotary compressor to avoid pulsating effect
b. reciprocating compressor to avoid pulsating effect
c. both rotary and reciprocating compressors to avoid pulsating effect
d. none of the above

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3. Which of the following factors is considered while selecting a compressor?

a. type of oil filter required
b. volumetric efficiency
c. viscosity of the liquids used
d. all the above

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4. Which of the following is a component used in air generation system?

a. pressure switch
b. pressure gauge
c. drier
d. intercooler

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5. Where is an intercooler connected in a two stage compressor?

a. intercooler is connected after the two stage compressor
b. intercooler is connected between the two stages of the compressor
c. intercooler is connected before the two stage compressor
d. none of the above

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6. Select the correct order of process occurring in pneumatic system

a.

b.

c.

d. none of the above

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7. What is difference between regulator and pressure switch?

a. regulator operates at set value pressure while pressure switch operates with slight fluctuation in pressure
b. pressure switch operates at set value pressure while regulator operates with slight fluctuation in pressure

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8. Select the correct standard symbols for the hydraulic elements given below.

Hydraulic elements

1. check valve
2. hydraulic motor
3. shut-off valve
4. pneumatic motor

Standard symbols

A.

B.

C.

D.

a. 1-C 2-A 3-B 4-D
b. 1-A 2-C 3-B 4-D
c. 1-B 2-D 3-A 4-C
d. 1-A 2-D 3-B 4-C

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9. Mass of water vapour in unit volume of air is known as

a. relative humidity
b. absolute humidity
c. saturation quantity
d. none of the above

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10.Which valve is also known as memory valve?

a. single pilot signal valve
b. double pilot signal valve
c. roller lever valve
d. logic valve

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