Safety valves are provided in chemical equipments to guard against excessive_________________?
A. Temperature
B. Pressure/pressure fluctuation
C. Turbulence
D. Noise
A. Temperature
B. Pressure/pressure fluctuation
C. Turbulence
D. Noise
A. Absorbing the contraction/expansion of pipeline due to temperature changes
B. Prevention of fluid leakage around moving parts
C. Facilitating smooth opening and closing of a valve
D. Reducing the resistance of fluid flow
A. More than
B. Not greater than
C. Not less than one fifth of
D. Both B. and C.
A. 0
B. ∞
C. > 1
D. < 1
A. Filtering area & the pressure difference driving force
B. Viscosity of filtrate
C. Cake & filter medium resistance
D. Both A. and B.
A. Waste steam
B. Destroy itself of acceleration wear due to rapid recycling
C. Back up condensate and cause water hammer in steam line
D. None of these
A. 0.6-0.8 times
B. Equal to
C. Twice
D. 2 ft irrespective of (for column > 3 ft diameter)