Practice Test: Question Set - 33
1. When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called
- (A) Gauge
pressure
- (B) Absolute
pressure
- (C) Positive
gauge pressure
- (D) Vacuum
pressure
2. If the coefficient of discharge is 0.6, then the discharge over a right angled notch is
- (A) 0.417 H5/2
- (B) 1.417 H5/2
- (C) 4.171 H5/2
- (D) 7.141 H5/2
3. The most efficient section of a channel is
- (A) Triangular
- (B) Rectangular
- (C) Square
- (D) Trapezoidal
4. A pipe of length more than double the diameter of orifice fitted externally or internally to the orifice is called a
- (A) Notch
- (B) Weir
- (C) Mouthpiece
- (D) Nozzle
5. An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination of the free surface of the liquid will be __________ to the acceleration of the tank.
- (A) Equal to
- (B) Directly
proportional
- (C) Inversely
proportional
- (D) None of
these
6. The coefficient of discharge for an external mouthpiece is
- (A) 0.375
- (B) 0.5
- (C) 0.707
- (D) 0.855
7. The process of diffusion of one liquid into the other through a semi permeable membrane is called
- (A) Viscosity
- (B) Osmosis
- (C) Surface tension
- (D) Cohesion
8. One stoke is equal to
- (A) 10-2 m2/s
- (B) 10-3 m2/s
- (C) 10-4 m2/s
- (D) 10-6 m2/s
9. Falling drops of water become spheres due to the property of
- (A) Surface
tension of water
- (B) Compressibility
of water
- (C) Capillarity
of water
- (D) Viscosity of
water
10. The specific gravity of an oil whose specific weight is 7.85 kN/m3, is
- (A) 0.8
- (B) 1
- (C) 1.2
- (D) 1.6
11. The length of the divergent cone in a Venturimeter is __________ that of the convergent cone.
- (A) Equal to
- (B) Double
- (C) Three to
four times
- (D) Five to six
times
12. If a body floating in a liquid returns back to its original position, when given a small angular displacement, the body is said to be in
- (A) Neutral
equilibrium
- (B) Stable
equilibrium
- (C) Unstable
equilibrium
- (D) None of
these
13. The stress-strain relation of the Newtonian fluid is
- (A) Linear
- (B) Parabolic
- (C) Hyperbolic
- (D) Inverse type
14. The viscosity of a liquid __________ its rate of flow through a hole in a vessel.
- (A) Effects
- (B) Does
not effect
- (C) Both A and B
- (D) None of
these
15. The coefficient of discharge in case of internal mouthpiece is __________ that of external mouthpiece.
- (A) Less than
- (B) More than
- (C) Equal to
- (D) None of
these
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