In case of a rotameter, the density of the float material is __________ that of the liquid it replaces.

As the fluid flow rate increases, the float of the rotameter

A

Rises in the tube

B

Rotates at higher speed

C

Rotates at lower speed

D

Drops down in the tube

A rotameter works on the principle of __________ pressure drop.

A

Constant

B

Variable

C

Both A & B

D

Neither A nor B

Rotameter is a device used to measure

A

absolute pressure

B

velocity of fluid

C

flow

D

rotation

The range of a particular rotameter can be increased by

A

Use of floats of different densities

B

No means

C

Increasing the diameter of the float

D

Decreasing the diameter of the float

In area meter (e.g., rotameter), with increase in the fluid flow rate, the

A

Pressure drop increases linearly

B

Pressure drop is almost constant

C

Area through which fluid flows does not vary

D

None of these

The operation of a rotameter is based on

A

Variable flow area

B

Rotation of a turbine

C

Pressure drop across a nozzle

D

Pressure at a stagnation point

Consider the following segment : int d=4 float f= (1/flaot(d))*5; what will be the value for float variable f?

A

1.25

B

0.1

C

5

সি-ভাষার ধ্রুবক ঘোষণা করার নিয়ম হলো-i. Const float pi=3.1416ii. float pi= 3.1416ii. # define pi = 3.1416 নিচের কোনটি সঠিক?

A

i ও ii

B

i ও iii

C

ii ও iii

D

i, ii ও ili

সি-ভাষার ধ্রুবক ঘোষণা করার নিয়ম হলো- i. const float pi =3.1416; ii. float pi = 3.1416; iii. #define pi 3.1416 নিচের কোনটি সঠিক?

A

i ও ii

B

i ও iii

C

ii ও iii

D

i, ii ও iii

The body will float if the force of buoyancy is __________ the weight of the liquid displaced.

A

Equal to

B

Less than

C

More than

D

None of these

In case of a rotameter, the density of the float material is __________ that of the liquid it replaces.

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