Fluid Mechanics

441.Specific speed for a centrifugal pump is

1. N √Q/H^3/4
2. N √Q/H^2/3
3. N³D⁵/H^1/3
4. N √Q/H

View answer

442.Specific speed of a centrifugal pump depends upon the _________ head.

1. Suction
2. Delivery
3. Manometric
4. None of these

View answer

443.Specific speed of a centrifugal pump relates it with another pump having the

1. Dynamic similarity
2. Same efficiency
3. Same speed
4. Geometrical similarity

View answer

444.Speed of sound in an ideal gas depends on its

1. Temperature
2. Pressure
3. Specific volume
4. None of these

View answer

445.Steady flow occurs, when the

1. Conditions change steadily with time
2. Conditions are the same at the adjacent points at any instant
3. Conditions do not change with time at any point
4. Rate of the velocity change is constant

View answer

446.Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.

1. ∂/∂s = 0
2. ∂/∂t = 0
3. ∂/∂s = constant
4. ∂/∂t = constant

View answer

447.Steady non-uniform flow is exemplified by flow through a/an

1. Long pipe at constant rate
2. Long pipe at decreasing rate
3. Expanding tube at increasing rate
4. Expanding tube at constant rate

View answer

448.Steady uniform flow is represented by flow through a/an

1. Long pipe at constant rate
2. Long pipe at decreasing rate
3. Expanding tube at constant rate
4. None of these

View answer

449.Stoke's equation is valid in the Reynolds number range

1. 0.01 to 0.1
2. 0.1 to 2
3. 2 to 10
4. 10 to 100

View answer

450.Stoke's law is valid, when N_Re, p is less than

1. 2
2. 100
3. 2100
4. 700

View answer