A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of________________?

A. 3.75 m
B. 4.0 m
C. 4.2m
D. 4.5m

A floating body is said to be in a state of stable equilibrium_________________?

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

If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will________________?

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

The increase in meta centric height_________________?

A. 1. increases stability
B. 2. decreases stability
C. 3. increases comfort for passengers
D. 4. decreases comfort for passengers

The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as__________________?

A. Center of gravity
B. Center of buoyancy
C. Center of pressure
D. Metacentre

When a liquid rotates at a constant angular velocity about a vertical axis as a rigid body, the pressure intensity varies________________?

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 right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is___________________?

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 closed tank containing water is moving in a horizontal direction along a straight line at a constant speed. The tank also contains a steel ball and a bubble of air. If the tank is decelerated horizontally, then________________?

A. 1. the ball will move to the front
B. 2. the bubble will move to the front
C. 3. the ball will move to the rear
D. 4. the bubble will move to the rear

Flow at constant rate through a tapering pipe is________________?

A. 1. steady flow
B. 2. uniform flow
C. 3. unsteady flow
D. 4. non-uniform flow

Least possible value of correction factor for________________?

A. 1. kinetic energy is zero
B. 2. kinetic energy is 1
C. 3. momentum is zero
D. 4. momentum is 1