**761. In case of a ____________ the energy of flow is considerably decreased downstream of the machine?**

A. Blower**B. Turbine**

C. Centrifugal pump

D. Centrifugal fan

**762. For an unstable equilibrium of a floating body (where, M = metacentre.) ?**

A. M is above G**B. M is below G**

C. M & G coincide

D. None of these

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

A. ∂/∂s = 0

B. ∂/∂t = 0**C. ∂/∂s = constant**

D. ∂/∂t = constant

**764. Which of the following has the minimum compressibility ?****A. Water at room temperature**

B. Air at room temperature

C. Oxygen at room temperature

D. Nitrogen at room temperature

**765. Power loss in an orificemeter is _____________ that in a Venturimeter?**

A. Less than

B. Same as**C. More than**

D. Data insufficient, cannot be predicted

**766. The pitot static tube does not measure the _____________ pressure?**

A. Static

B. Total

C. Difference in static & dynamic**D. All A., B. and C.**

**767. For Laminar flow through a packed bed, the pressure drop is proportional to (Vs is the superficial liquid velocity and Dp is the particle diameter) ?****A. Vs/Dp2**

B. Vs2/Dp2

C. Vs2/Dp3

D. Vs/Dp3

**768. What is the co-efficient of contraction, if a fluid jet discharging from a 50 mm diameter orifice has a 40 mm diameter at its vena-contracta ?****A. 0.64**

B. 1.65

C. 0.32

D. 0.94

**769. Gradually varied flow in open channel is a/an ____________ flow?**

A. Steady uniform**B. Steady non-uniform**

C. Unsteady uniform

D. Unsteady non-uniform

**770. What is the ratio of fluid carrying capacity of two pipes having diameters d1 and d2 respectively ?**

A. (d1/d2)0.8**B. (d1/d2)0.5**

C. d1/d2

D. (d1/d2)2

**NOTEIF YOU THINK ANY OF THE MCQ ABOVE IS WRONG.PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX.THANK YOU**