MCQ 1 Select the non-dimensional parameter of the following

(A) Inertial forces (B) Viscous forces (C) Gravity forces (D) None of the above

MCQ 2 Surge wave in a rectangular channel is an example of

• i. Steady flow
• ii. Unsteady flow
• iii. Uniform flow
• iv. Non-uniform flow

The correct answer is

(A) (ii) and (iii) (B) (ii) and (iv) (C) (i) and (iv) (D) (i) and (iii)

MCQ 3 The viscosity of fluid varies with

(A) Temperature (B) Temperature and pressure (C) Density (D) Pressure

MCQ 4 In the most general form of Bernoulli’s equation P/W + V²/2g + z = Constant, each term represents

(A) Energy per unit mass (B) Energy per unit volume (C) Energy per unit weight (D) None of the above

MCQ 5 The continuity equation p₁V₁A₁ = p₂V₂A₂ is based on the following assumption regarding flow of fluid where p₁ and p₂ are mass densities.

(A) Friction Flow (B) Friction Flow (C) Steady Flow (D) Incompressible Flow

MCQ 6 The specific speed of a turbine is defined as the speed of a unit of such a size that it

(A) Delivers unit discharge at unit power (B) Produces unit power for unit head (C) Delivers unit discharge at unit head (D) None of the above

MCQ 7 Which of the following is not a non-dimensional parameter?

(A) Mach number (B) Chezy’s coefficient (C) Froude number (D) Darcy-weisbach friction factor

MCQ 8 Hydraulic jump is a

(A) Non-uniform flow (B) Steady flow (C) Uniform flow (D) Unsteady flow

MCQ 9 A streamlined body is defined as a body about which

(A) The flow is laminar (B) The drag is zero (C) The flow is along the stream lines (D) The flow separation is suppressed

MCQ 10 A fluid is a substance that

(A) Cannot be subjected varies with (B) Is essentially incompressible (C) Cannot remain at rest when subjected to a shearing stress (D) Has a viscosity that always decreases with temperature

MCQ 11 A normal shock wave

(A) Occurs when the approaching flow is subsonic (B) Occurs when the approaching flow is supersonic (C) Is reversible (D) Is isentropic

MCQ 12 When the slope of bottom of a channel rises in the direction of flow, it is called

(A) Steep slope (B) Critical slope (C) Adverse slope (D) Mild slope

MCQ 13 Super critical flow can occur in a

(A) Channel with steep slope (B) Imaginary (C) Channel with a mild slope (D) A horizontal channel

MCQ 14 In a supersonic flow, a diverging passage results in

(A) Increase in the velocity and density (B) decrease in the velocity and pressure (C) decrease in the pressure and density (D) Increase in the velocity and pressure

MCQ 15 The unit of kinematic viscosity is

(A) Gm/cm − sec² (B) Dyne − sec/cm² (C) Gm/cm² − sec (D) Cm²/sec