Hydraulics and Fluid Mechanics in ME - Mechanical Engineering Questions and Answers

Share

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to

A.

1/2 × depth

B.

1/2 × breadth

C.

1/2 × sloping side

D.

1/4 × (depth + breadth)

Share

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

The pressure of liquid at throat in a Venturimeter is __________ than that at inlet.

A.

Higher

B.

Lower

C.

Same

D.

None of these

Share

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will

A.

Increase

B.

Decrease

C.

Remain same

D.

Increase/decrease depending on depth of immersion

Share

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

Fluid is a substance which offers no resistance to change of

A.

Pressure

B.

Flow

C.

Shape

D.

Volume

Share

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary

A.

Directly as the air or gas density

B.

Inversely as square root of density

C.

Inversely as density

D.

As square of density

Share

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

For centrifugal pump impeller, the maximum value of the vane exit angle is

A.

10° to 15°

B.

15° to 20°

C.

20° to 25°

D.

25° to 30°

Share

Whatsapp
Facebook
Copy
Copy Text
Copy
Copy URL

A hemispherical tank of radius (R) has an orifice of cross-sectional area (a) at its bottom and is full of liquid. The time required to empty the tank completely is

A.

14π R1/2/15Cd × a √(2g)

B.

14π R3/2/15Cd × a √(2g)

C.

14π R5/2/15Cd × a √(2g)

D.

14π R7/2/15Cd × a √(2g)