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.Management Sciences
Category: Hydraulics and Fluid Mechanics
The bulk modulus of elasticity with increase in pressure___________________?
A. increases
B. decreases
C. remains constant
D. increases first upto certain limit and then decreases
E. unpredictable
Dynamic viscosity of most of the liquids with rise in temperature____________________?
A. increases
B. decreases
A. remains unaffected
D. unpredictable
E. none of the above
Two pipe systems can be said to be equivalent, when the following quantites are same______________?
A. friction loss and flow
B. length and diameter
C. flow and length
D. friction factor and diameter
E. velocity and diameter
The normal stress in a fluid will be constant in all directions at a point only if_________________?
A. it is incompressible
B. it has uniform viscosity
C. it has zero viscosity
D. it is frictionless
E. it is at rest.
Hot wire anemometer is used to measure_______________?
A. discharge
B. velocity of gas
C. pressure intensity of gas
D. pressure intensity of liquid
The vapour pressure over the concave surface is__________________?
A. less man the vapour pressure over the plane surface
B. equal to the vapour pressure over the plane surface
C. greater than the vapour pressure over the plane surface
D. zero
E. none of the above
Flow of water in a pipe about 3 meters in diameter can be measured by_________________?
A. orifice plate
B. venturi
C. rotameter
D. pitot tube
E. nozzle
The units of viscosity are__________________?
A. metres2 per sec
B. kg sec/metre
C. newton-sec per metre2
D. newton-sec per metre
E. none of the above
The density of water is 1000 kg/m3 at __________________?
A. 0°C
B. 0°K
C. 4°C D. 20°C
E. all temperature
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