Hydraulics & Fluid Mechanics Mcqs

MCQ: Hot wire anemometer is used to measure_______________?

1. discharge
2. velocity of gas
3. pressure intensity of gas
4. pressure intensity of liquid

MCQ: Density of water is maximum at ___________________?

1. 0°C
2. 0°K
3. 4°C
4. 100°C
5. 20°C.

MCQ: Property of a fluid by which its own molecules are attracted is called ________________?

1. adhesion
2. cohesion
3. viscosity
4. compressibility
5. surface tension

MCQ: The property of a fluid which enables it to resist tensile stress is known as________________?

1. compressibility
2. surface tension
3. cohesion
4. adhesion
5. viscosity

MCQ: The specific weight of water is 1000 kg/m” _______________?

1. at norma] pressure of 760 mm
2. at 4°C temperature
3. at mean sea level
4. all the above
5. none of the above.

MCQ: When the flow parameters at any given instant remain same at every point, then flow is said to be____________________?

1. quasi static
2. steady state
3. laminar
4. uniform
5. static

MCQ: The normal stress in a fluid will be constant in all directions at a point only if_________________?

1. it is incompressible
2. it has uniform viscosity
3. it has zero viscosity
4. it is frictionless
5. it is at rest

MCQ: An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is___________________?

1. 10m/sec2
2. 9.81 m/sec2
3. 10.2/m sec
4. 9.75 m/sec2
5. 9 m/sec

MCQ: The surface tension of mercury at normal temperature compared to that of water is____________________?

1. more
2. less
3. same
4. more or less depending on size of glass tube
5. none of the above

MCQ: For very great pressures, viscosity of moss gases and liquids __________________?

1. remains same
2. increases
3. decreases
4. shows erratic behaviour
5. none of the above