A. Run at a lower speed for the same discharge
B. Do not need priming
C. Deliver fluid with pulsating/fluctuating discharge
D. Can be run with discharge line valve closed for a short interval
Related Mcqs:
- 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 - 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 - Centrifugal compressors compared to reciprocating compressors__________________?
A. Require less space
B. Have quieter operation
C. Have lower operating costs
D. All A., B. and C. - _____________________ 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 - 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 - 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 - Most of the centrifugal pumps used in chemical plants are usually ____________________ driven?
A. Steam
B. Diesel engine
C. Electric motor
D. Gas turbine - 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 - A double acting reciprocating pump compared to a single acting pump (of almost same size working under same pressure levels) would give almost double___________________?
A. Head
B. Discharge
C. Efficiency
D. None of these
