## A globe valve is the most suitable for applications, in which____________________?

A globe valve is the most suitable for applications, in which____________________?

A. Fluid flow control is required
B. Fluid contains dispersed solid particles
C. Valve is required to be either fully open or fully closed
D. One way flow is required

## Buckingham-π theorem states that in any physical problem including ‘n’ quantities having ‘m’ dimensions, the quantities can be arranged into _____________ independent dimensionless parameters?

Buckingham-π theorem states that in any physical problem including ‘n’ quantities having ‘m’ dimensions, the quantities can be arranged into _____________ independent dimensionless parameters?

A. m
B. n
C. n-m
D. n/m

## When the head pumped against is less than the head of the fluid used for pumping, the usual device is a/an______________________?

When the head pumped against is less than the head of the fluid used for pumg, the usual device is a/an______________________?

A. Ejector
B. Blower
C. Injector
D. Airlift

## The hydraulic radius for flow in a rectangular duct of cross-sectional dimension H, W is___________________?

The hydraulic radius for flow in a rectangular duct of cross-sectional dimension H, W is___________________?

A. √(HW/π)
B. HW/2 (H + W)2
C. HW/4 (H + W)2
D. 2HW/(H + W)

## Permanent pressure loss in a well designed Venturimeter is about _____________ percent of the venturi differential?

Permanent pressure loss in a well designed Venturimeter is about _____________ percent of the venturi differential?

A. 1
B. 10
C. 30
D. 50

## For an ideal fluid flow, Reynolds number is___________________?

For an ideal fluid flow, Reynolds number is___________________?

A. 2100
B. 100
C. 0
D. ∞

## Unit of mass velocity is__________________?

Unit of mass velocity is__________________?

A. kg/hr
B. kg/m2. hr
C. kg/m2
D. kg/m3. hr

## The lift of a balloon is_________________?

The lift of a balloon is_________________?

A. Increased, as it rises to a higher altitude
B. Due to the weight of the atmospheric air, that it displaces
C. Not dependent on the temperature of the atmosphere
D. None of these

## The most economical flow control valve for use with large diameter pipes is a__________________?

The most economical flow control valve for use with large diameter pipes is a__________________?

A. Butterfly valve
B. Globe valve
C. Needle valve
D. None of these

## The equivalent diameter for fluid flow through square cross section channel of side ‘x’, for pressure drop calculation purpose is given by____________________?

The equivalent diameter for fluid flow through square cross section channel of side ‘x’, for pressure drop calculation purpose is given by____________________?

A. 4x
B. 2x
C. x
D. √x