Questions and answers for exam Preparation

MCQs

Total Questions : 3147 | Page 310 of 315 pages

Question 3091. In an immersed body, centre of pressure is __________________?

at the centre of gravity
above the centre of gravity
below be centre of gravity
could be above or below e.g. depend¬ing on density of body and liquid
unpredictable

Discuss Question

Answer: Option C. -> below be centre of gravity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3092. According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to_________________?

the weight of the body
more than the weight of the body
less than the weight of the body
weight of the fluid displaced by the body
weight of body plus the weight of the fluid displaced hy the body

Discuss Question

Answer: Option D. -> weight of the fluid displaced by the body
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3093. The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the centriod, if___________________?

the area is horizontal
the area is vertical
the area is inclined
all of the above
none of the above

Discuss Question

Answer: Option D. -> all of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3094. For a body floating in a liquid the normal pressure exerted by the liquid acts at ____________________?

bottom surface of the body
e.g. of the body
metacentre
all points on the surface of the body
all of the above

Discuss Question

Answer: Option D. -> all points on the surface of the body
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3095. The depth of the center of pressure on a vertical rectangular gate 8 m wide and 6 m high, when the water surface coincides with the top of the gate, is____________________?

2.4 m
3.0 m
4.0 m
2.5 m
5.0 m

Discuss Question

Answer: Option B. -> 3.0 m
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3096. A body floats in stable equilibrium ____________________?

when its meatcentric height is zero
when the metancentre is above e.g.
when its e.g. is below it’s center of buoyancy
metacentre has nothing to do with position of e.g. for determining stability
none of the above

Discuss Question

Answer: Option B. -> when the metancentre is above e.g.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3097. Working principle of dead weight pressure gauge tester is based on_______________?

Pascal’s law
Dalton’s law of partial pressure
Newton’s law of viscosity
Avogadro’s hypothesis
Second law of thermodynamic

Discuss Question

Answer: Option A. -> Pascal’s law
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3098. Which of the following manometer has highest sensitivity_________________?

U-tube with water
inclined U-tube
U-tube with mercury
micro-manometer with water
displacement type

Discuss Question

Answer: Option D. -> micro-manometer with water
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3099. Center of pressure compared to e.g. is___________________?

above it
below it
at same point
above or below depending on area of body
none of the above

Discuss Question

Answer: Option B. -> below it
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

Question 3100. The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the sub-merged body is called_______________?