| Orifices are used to measure |
A) velocity
B) pressure
C) rate of flow
D) None of the above
| The force of friction which exits when the body is in motion is called |
A) Static friction
B) Limiting friction
C) Dynamic friction
D) None of the above
| If ‘V1’ is the velocity of jet at inlet and ‘u’ is the Tangential velocity of vane, for maximum efficiency of Pelton Wheel the condition is |
A) u = V1 / 4
B) u = V1 / 2
C) u = V1
D) 3u = V1
| The dynamic force exerted by a fluid jet of cross – sectional area A and velocity V on a flat plate moving with velocity u and held at right angle to the direction of jet is |
A) pAVu
B) pA(V – u)2
C) pA(V – u)u
D) pA(V + u)u
| A horizontal water jet with a velocity of 14 m/s and cross-sectional area of 10 mm2 strikes a flat plate held normal to the flow direction. The density of water is 1000 kg/m3. The total force on the plate due to the jet would be |
A) 1.96 N
B) Zero
C) 0.196 N
D) 19.6 N
