Fluid Mechanics

A. rise until its weight equals the buoyant force
B. tend to move downward and it may finally sink
C. float
D. none of the above

1. increases stability
2. decreases stability
3. increases comfort for passengers
4. decreases comfort for passengers
The correct answer is?

A. (1) and (3)
B. (1)and(iv)
C. (2) and (3)
D. (2) and (4)

A. center of gravity
B. center of buoyancy
C. center of pressure
D. metacentre

A. linearly with radial distance
B. as the square of the radial distance
C. inversely as the square of the radial distance
D. inversely as the radial distance

A. zero
B. one-fourth its value when cylinder was full
C. one-half its value when cylinder was full
D. cannot be predicted from the given data

A. Coefficient of contraction of a venturimeter is unity
B. Flow nozzle is cheaper than venturimeter but has higher energy loss
C. Discharge is independent of orientation of venturimeter whether it is horizontal, vertical or inclined
D. None of the above statement is correct.

1. the ball will move to the front
2. the bubble will move to the front
3. the ball will move to the rear
4. the bubble will move to the rear
Find out which of the above statements are correct ?

A. (1) and (2)
B. (1)and(4)
C. (2) and (3)
D. (3) and (4)

A. The pressure intensity at vena contracta is atmospheric
B. Contraction is least at vena contracta
C. Stream lines are parallel throughout the jet at vena contracta
D. Coefficient of contraction is always less than one

1. steady flow
2. uniform flow
3. unsteady flow
4. non-uniform flow
The correct answer is?

A. (1) and (2)
B. (1)and(iv)
C. (2) and (3)
D. (2) and (4)

A. 0
B. 1
C. 4/3
D. 2