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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

Mechanical Engineering MCQs prepared for job test and interview preparation, especially for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover key topics such as Machine Design, Theory of Machines, Hydraulic Machines, and other important mechanical engineering concepts.

The maximum number of jets generally employed in impulse turbine without jet interference is________________?

A 4

B 6

C 8

D 12

Review Detailed Answer

Correct Answer: 6

Any change in load is adjusted by adjusting following parameter on turbine______________?

A net head

B absolute velocity

C blade velocity

D flow

Review Detailed Answer

Correct Answer: flow

Indicator diagram of a reciprocating pump is a graph between________________?

A flow vs swept volume

B pressure in cylinder vs swept volume

C flow vs speed

D pressure vs speed

Review Detailed Answer

Correct Answer: pressure in cylinder vs swept volume

Medium specific speed of a pump implies it is_________________?

A centrifugal pump

B mixed flow pump

C axial flow pump

D any one of the above

Review Detailed Answer

Correct Answer: mixed flow pump

The horse power required in above case will be___________________?

A same

B 0.75 B.H.P.

C B.H.P./0.75

D 1.5 B.H.P.

Review Detailed Answer

Correct Answer: 0.75 B.H.P.

Low specific speed of a pump implies it is____________________?

A centrifugal pump

B mixed flow pump

C axial flow pump

D any one of the above

Review Detailed Answer

Correct Answer: centrifugal pump

In a centrifugal pump, the liquid enters the pump__________________?

A at the top

B at the bottom

C at the center

D from sides

Review Detailed Answer

Correct Answer: at the center

In centrifugal pumps, maximum efficiency is obtained when the blades are_________________?

A straight

B bent forward

C bent backward

D radial

Review Detailed Answer

Correct Answer: bent backward

The optimum value of vane exit angle for a centrifugal pump impeller is_________________?

A 10-15°

B 20-25°

C 30-40°

D 50-60°

Review Detailed Answer

Correct Answer: 20-25°

If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge_____________________?

A same quantity of liquid

B 0.75 Q

C Q/0.75

D 1.5 Q

Review Detailed Answer

Correct Answer: same quantity of liquid

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Mechanical Engineering Mcqs 1919 MCQs [All-Courses]

All Topics 1919

All Topics 1919

The maximum number of jets generally employed in impulse turbine without jet interference is________________?

Any change in load is adjusted by adjusting following parameter on turbine______________?

Indicator diagram of a reciprocating pump is a graph between________________?

Medium specific speed of a pump implies it is_________________?

The horse power required in above case will be___________________?

Low specific speed of a pump implies it is____________________?

In a centrifugal pump, the liquid enters the pump__________________?

In centrifugal pumps, maximum efficiency is obtained when the blades are_________________?

The optimum value of vane exit angle for a centrifugal pump impeller is_________________?

If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge_____________________?