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Hydraulics & Fluid Machineries MCQ - Multiple Choice Question and Answer

Hydraulics & Fluid Machineries MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 29
A hydraulic intensifier normally consists of

Two cylinders, two rams and a storage device
A cylinder and a ram
Two coaxial rams and two cylinders
A cylinder, a piston, storage tank and control valve

Question No : 30
Which of the following pump is generally used to pump highly viscous fluid?

Centrifugal pump
Reciprocating pump
Air lift pump
Screw pump

Question No : 31
Air vessels in reciprocating pump are used to

Smoothen flow
Reduce acceleration to minimum
Increase pump efficiency
Save pump from cavitations

Question No : 32
The undershot water wheels are those in which

The wheel runs entirely by the weight of water
The wheel runs entirely by the impulse of water
The wheel runs partly by the weight of water and partly by the impulse of water
None of the above

Question No : 33
In an outward flow reaction turbine

The water flows parallel to the axis of the wheel
The water enters at the centre of the wheel and then flows towards the outer periphery of the wheel
The water enters the wheel at the outer periphery and then flows towards the centre of the wheel
The flow of water is partly radial and partly axial

Question No : 34
A turbine pump is basically a centrifugal pump equipped additionally with

Adjustable blades
Backward curved blades
Vaned diffusion casing
Inlet guide blades

Question No : 35
Discharge of a centrifugal pump is (where N = Speed of the pump impeller)

Directly proportional to N
Inversely proportional to N
Directly proportional to N²
Inversely proportional to N²