Oil Hydraulics and Pneumatics (3151913) MCQs

MCQs of Hydraulic Oils, Fluid Properties and Filter

Showing 31 to 40 out of 43 Questions
1 2 3 4 5
31.

The positive displacement pump used in hydraulic systems has ______.

(a)

High viscosity fluids
(b)

Low efficiency
(c)

Low viscosity fluids
(d)

All of the given
Answer:

Option (a)

32.

Pressure drop in pipes occurs due to_____

(a)

Frictional resistance
(b)

Load
(c)

Flow pattern
(d)

None of the given
Answer:

Option (a)

33.

Which of the following reasons make water unsuitable to use as a fluid in hydraulic systems?

1. Poor lubrication

2. High viscosity

3. More leakage

4. Quickly evaporates

(a)

1 & 3
(b)

2 & 4
(c)

1, 3 & 4
(d)

All of the given
Answer:

Option (c)

34.

In the fixed displacement vane pump_____,

(a)

Flow rate decreases with increase in working pressure
(b)

Flow rate increases with increase in working pressure
(c)

Flow rate is constant and does not change with working pressure
(d)

None of the given
Answer:

Option (a)

35.

The viscosity of petroleum oil for hydraulic lifts is ____________

(a)

High
(b)

Low
(c)

Moderate
(d)

Very high
Answer:

Option (b)

36.

Select the incorrect statement from the following option.

(a)

Lubricant keeps out dirt
(b)

Lubricant act as a seal
(c)

Lubricant transmit fluid power
(d)

Lubricant enhance corrosion
Answer:

Option (d)

37.

High-water-content fluid (HWCF) come under the category of ______ fluid.

(a)

HFA
(b)

HFB
(c)

HFC
(d)

HFD
Answer:

Option (a)

38.

Synthetic fluids come under the category of ______ fluid.

(a)

HFA
(b)

HFB
(c)

HFC
(d)

HFD
Answer:

Option (d)

39.

Which fluid is suitable for mining operations?

(a)

Petroleum-based fluids
(b)

Water glycol
(c)

Synthetic fluids
(d)

Fire Resistance
Answer:

Option (d)

40.

Which fluid is suitable as a coolant in machining operations?

(a)

Petroleum-based Fluids
(b)

Emulsions
(c)

Synthetic Fluids
(d)

Water Glycol
Answer:

Option (c)

Showing 31 to 40 out of 43 Questions
1 2 3 4 5