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. 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. 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.
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. 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. center of gravity
B. center of buoyancy
C. center of pressure
D. metacentre
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. 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
A. when its metacentric height is zero
B. when the metacentre is above the centre of gravity
C. when the metacentre is below the centre of gravity
D. only when its centre of gravity is below its centre of buoyancy