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Month: January 2019

A metal with specific gravity of o floating in a fluid of same specific gravity a will____________________?

August 16, 2021January 29, 2019 by admin
A metal with specific gravity of o floating in a fluid of same specific gravity a will____________________?

A. sink to bottom
B. float over fluid
C. partly immersed
D. be fully immersed with top surface at fluid surface
E. none of the above

Categories Fluid Mechanics

Dynamic viscosity of most of the liquids with rise in temperature__________________?

August 16, 2021January 29, 2019 by admin
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

Categories Fluid Mechanics

Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem_________________?

August 16, 2021January 29, 2019 by admin
Which of the following instruments is used to measure flow on the application of Bernoulli’s theorem_________________?

A. Venturimeter
B. Orifice plate
C. nozzle
D. pitot tube
E. all of the above

Categories Fluid Mechanics

Which of the following instrument can be used for measuring speed of an aeroplane___________________?

August 16, 2021January 29, 2019 by admin
Which of the following instrument can be used for measuring speed of an aeroplane___________________?

A. Venturimeter
B. Orifice plate
C. hot wire anemometer
D. rotameter
E. pitot tube

Categories Fluid Mechanics

In an isothermal atmosphere, the pressure___________________?

August 16, 2021January 29, 2019 by admin
In an isothermal atmosphere, the pressure___________________?

A. decreases linearly with elevation
B. remains constant
C. varies in the same way as the density
D. increases exponentially with elevation
E. unpredictable

Categories Fluid Mechanics

Operation of McLeod gauge used for low pressure measurement is based on the principle of_________________?

August 16, 2021January 29, 2019 by admin
Operation of McLeod gauge used for low pressure measurement is based on the principle of_________________?

A. gas law
B. Boyle’s law
C. Charle’s law
D. Pascal’s law
E. McLeod’s law

Categories Fluid Mechanics

The atmospheric pressure with rise in altitude decreases__________________?

August 16, 2021January 29, 2019 by admin
The atmospheric pressure with rise in altitude decreases__________________?

A. linearly
B. first slowly and then steeply
C. first steeply and then gradually
D. unpredictable
E. none of the above

Categories Fluid Mechanics

Capillary action is due to the_________________?

August 16, 2021January 29, 2019 by admin
Capillary action is due to the_________________?

A. surface tension
B. cohesion of the liquid
C. adhesion of the liquid molecules and the molecules on the surface of a solid
D. all of the above
E. none of the above

Categories Fluid Mechanics

The rise or depression of liquid in a tube due to surface tensionwim increase in size of tube will________________?

August 16, 2021January 29, 2019 by admin
The rise or depression of liquid in a tube due to surface tensionwim increase in size of tube will________________?

A. increase
B. remain unaffected
C. may increase or decrease depending on the characteristics of liquid
D. decrease
E. unpredictable

Categories Fluid Mechanics

The units of dynamic or absolute viscosity are__________________?

August 16, 2021January 29, 2019 by admin
The units of dynamic or absolute viscosity are__________________?

A. metres2 per sec
B. kg sec/meter
C. newton-sec per meter
D. newton-sec2 per meter
E. none of the above

Categories Fluid Mechanics
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