MCQs of Hydraulic Pumps, Motors,Valves and Actuators (Oil Hydraulics and Pneumatics - 3151913)

Showing 21 to 30 out of 53 Questions

21.

Which type of displacement is observed in gear pumps?

22.

Balanced vane pumps are designed to have

(a)	Fixed displacement
(b)	Variable displacement
(c)	Both fixed and variable displacement
(d)	None of the given

23.

When is a pressure reducing valve used?

(a)	It is used when higher pressure than system pressure is required
(b)	It is used when lower pressure than system pressure is required
(c)	When absolutely zero pressure is required
(d)	All of the given

24.

What is the function of the sequence valve used in hydraulic circuits?

(a)	Sequence valves are used to perform a number of operations one after the other after the set pressure is reached
(b)	Sequence valves are used to perform a number of operations continuously before the set pressure is reached
(c)	Sequence valves after reaching set pressure oil is flown to the tank
(d)	All the of given

25.

In a telescopic cylinder, as the number of stages increases ______.

(a)	The diameter of the piston rod also increases
(b)	The diameter of the piston rod decreases
(c)	The diameter of the piston rod remains the same
(d)	None of the given

26.

Double-acting cylinder can be used as a single-acting cylinder.

(a)	True
(b)	False

27.

What happens when the supply of oil to a single-acting cylinder is stopped?

(a)	No pressure is exerted on the system
(b)	More pressure is exerted on the piston
(c)	Less pressure is exerted on the piston
(d)	None of the following

28.

Which of the following is a hydraulic cylinder based on application?

29.

Which of the following is a hydrodynamic pump?

30.

Which of the following is a characteristic of the servo valve?

Showing 21 to 30 out of 53 Questions