Oil Hydraulics and Pneumatics (2171912) MCQs

MCQs of Pneumatic Circuits

Showing 21 to 30 out of 39 Questions
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21.

The pressure sequence valve used in the pneumatic circuit is 

(a)

combination of adjustable pressure reducing valve and flow control valve
(b)

combination of adjustable pressure reducing valve and check valve
(c)

combination of the non-adjustable pressure relief valve and directional control valve
(d)

combination of the adjustable pressure relief valve and directional control valve
Answer:

Option (d)

22.

Which of the following is used to sense the initial and final positions of a piston rod in the circuit?

(a)

Lever operated direction control valve
(b)

Limit switch
(c)

Roller lever valve
(d)

All of the mentioned 
Answer:

Option (d)

23.

Which numbers are used to denote the retraction of a piston rod in circuit?

(a)

Even numbers
(b)

Odd numbers
(c)

Both even and odd numbers
(d)

None of the mentioned 
Answer:

Option (b)

24.

Which of the following is an element of time delay valve?

(a)

Flow control valve
(b)

Direction control valve
(c)

Both of the mentioned 
(d)

None of the mentioned 
Answer:

Option (c)

25.

Overlapping of signals in pneumatic systems can be avoided by using

(a)

rolling lever valve
(b)

idle roller lever valve
(c)

both of the mentioned 
(d)

none of the mentioned 
Answer:

Option (c)

26.

Fluid power circuits use schematic drawings to 

(a)

simplify component function details
(b)

make it so only trained persons can understand the functions
(c)

make the drawing look impressive
(d)

make an untrained person understand
Answer:

Option (a)

27.

Most hydraulic circuits

(a)

does not have a dedicated power unit
(b)

have a dedicated power unit
(c)

use air-over-oil power units
(d)

operate from a central hydraulic power unit
Answer:

Option (d)

28.

Hydraulic and pneumatic circuits

(a)

perform the same way for all functions
(b)

perform differently for all functions
(c)

perform the same with some exceptions
(d)

does not perform all the functions
Answer:

Option (c)

29.

The lubricator in a pneumatic circuit is the

(a)

the first element in line
(b)

the second element in line
(c)

the last element in line
(d)

the third element inline
Answer:

Option (c)

30.

The most of the practical pneumatic circuits use multi cylinders they are operated in

(a)

specific sequence to carry out the desired task
(b)

to carry out the desired task
(c)

both of the mentioned 
(d)

none of the mentioned 
Answer:

Option (a)

Showing 21 to 30 out of 39 Questions
1 2 3 4