A. Higher pressure
B. Slurries
C. Viscous mass
D. None of these
Related Mcqs:
- A hydraulic press has a ram of 10 cms in diameter and a plunger of 1 cm in diameter. The force required on the plunger to raise a weight of 10 tons on the ram is _____________ kg?
A. 10
B. 100
C. 1000
D. 10000 - _____________________ pumps are a group of vacuum pumps ?
A. Hyster
B. Sump
C. Mono
D. Submerged - ______________ pumps are axial flow pumps?
A. Turbine
B. Propeller
C. Diffuser
D. None of these - Reciprocating pumps are not able to compete with the centrifugal pump for industrial use, mainly because these pumps have_____________?
A. Very low speeds
B. Smaller discharge
C. Higher capital &maintenance cost
D. High vibrations - Propeller type centrifugal pumps are most suitable for__________________?
A. High capacity at high heads
B. High capacity at low heads
C. Low capacity at high heads
D. Low capacity at low heads - In centrifugal pumps, cavitation occurs, when pressure of the impeller eye or vane becomes_______________?
A. Less than atmospheric pressure
B. More than liquid vapor pressure
C. Less than liquid vapor pressure
D. More than atmospheric pressure - Most of the centrifugal pumps used in chemical plants are usually ____________________ driven?
A. Steam
B. Diesel engine
C. Electric motor
D. Gas turbine - Foot valves provided in pumps are ____________ valves?
A. Relief
B. Three/four way
C. Pressure reducing
D. Directional control - Reciprocating pumps compared to centrifugal pumps__________________?
A. Deliver liquid at uniform pressure
B. Can handle slurries more efficiently
C. Are not subject to air binding
D. Can be operated with delivery valve closed - Multistage centrifugal pumps are generally used for________________?
A. High head
B. Low head but high discharge
C. Highly viscous liquid
D. Slurries of high solid concentration
