In isotropic turbulence, the _____________ are equal to each other?
A. Temporal velocity components
B. Mean square of velocity fluctuations in the three co-ordinate directions
C. Root mean square of velocity fluctuations in the three co-ordinate directions
D. None of these
Stoke’s equation is valid in the Reynolds number range__________________?
A. 0.01 to 0.1
B. 0.1 to 2
C. 2 to 10
D. 10 to 100
Purpose of relief valve in a reciprocating pump is to___________________?
A. Protect the pump against developing excessive pressure
B. Facilitate unidirectional flow of liquid
C. Reduce the discharge pressure
D. Control the rate of discharge
What is the maximum theoretical suction lift (metres) of a reciprocating pump ?
A. 5
B. 10
C. 50
D. 100
Which of the following facilitates close control of flow of fluids ?
A. Gate valve
B. Globe valve
C. Butterfly valve
D. Check valve
Lower BWG means _____________ of the tube?
A. Lower thickness
B. Lower cross-section
C. Outer diameter
D. Inner diameter