The viscosity of a gas_______________?

The viscosity of a gas_______________?

A. decreases with increase in temperature
B. increases with increase in temperature
C. is independent of temperature
D. is independent of pressure for very high pressure intensities

Newton’s law of viscosity relates________________?

Newton’s law of viscosity relates________________?

A. intensity of pressure and rate of angular deformation
B. shear stress and rate of angular deformation
C. shear stress, viscosity and temperature
D. viscosity and rate of angular deformation

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 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

The increase in meta centric height_________________?

The increase in meta centric height_________________?

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)

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

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 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