Oil Hydraulics and Pneumatics (2171912) MCQs

MCQs of Introduction

Showing 11 to 20 out of 54 Questions
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11.

Rotary motion in a hydraulic power unit is achieved by using_____.

(a)

Hydraulic cylinder
(b)

Pneumatic cylinder
(c)

Both hydraulic and pneumatic cylinder
(d)

None of the given
Answer:

Option (d)

12.

In hydraulic systems_______

(a)

The mechanical energy is transferred to the oil and then converted into mechanical energy
(b)

The electrical energy is transferred to the oil and then converted into mechanical energy
(c)

The mechanical energy is transferred to the oil and converted into electrical energy
(d)

None of the given
Answer:

Option (a)

13.

Which of the following statements are false?

1. Pressure is resistance to flow

2. Friction creates pressure

3. Load cannot create pressure on the system

4. The pressure developed decreases if load offers more resistance

(a)

1, 2 & 3
(b)

1 & 2
(c)

3 & 4
(d)

All of them
Answer:

Option (c)

14.

At low pressures, liquids are_____.

(a)

Compressible
(b)

Incompressible
(c)

Unpredictable
Answer:

Option (b)

15.

How is power transmitted in fluid power systems?

(a)

Power is transmitted instantaneously
(b)

Power is transmitted gradually
(c)

Both of the given
(d)

None of the given
Answer:

Option (a)

16.

Pressure of 1 bar is equal to______.

(a)

14.5 psi
(b)

145 psi
(c)

12.5 psi
(d)

145 x 10-6 psi
Answer:

Option (a)

17.

Which fluid is used in hydraulic power systems?

(a)

Water
(b)

Oil
(c)

Incompressible fluids
(d)

All of the given
Answer:

Option (d)

18.

Heavy lifting work is often accomplished by shifting fluids in big machines. The power system of such machines can be described as______.

(a)

Reciprocating
(b)

Pneumatic
(c)

Hydraulic
(d)

Hybrid
Answer:

Option (c)

19.

The scientific principle that makes hydraulic systems possible is_________.

(a)

Pascal’s principle
(b)

Boyle’s law
(c)

Bernoulli’s principle
(d)

The fluid flow principle
Answer:

Option (a)

20.

Pneumatic and other power systems can support three kinds of motion; they are________.

(a)

Linear, reciprocating, and random motion
(b)

Linear, flowing, and rotary motion
(c)

Linear, zigzag, and spiral motion
(d)

Linear, reciprocating, and rotary motion
Answer:

Option (d)

Showing 11 to 20 out of 54 Questions
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