A. Reduce the cost of compressor
B. Reduce the size requirement
C. Resemble closely to isothermal compression
D. Are easy to control
Related Mcqs:
- 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. - The maximum delivery pressure of compressors can be upto _____________ atmospheres?
A. 10
B. 100
C. 250
D. 1000 - Interstage coolers are provided in a multistage compressor to____________________?
A. Save power in compressing a given volume to a given pressure
B. Cool the delivered air
C. Achieve the exact delivery pressure
D. None of these - 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 - Air vessel of a reciprocating pump is initially filled with___________________?
A. Atmospheric air
B. Compressed air
C. Water
D. None of these - Equivalent length of a pipe fitting is____________________?
A. Dependent on Reynolds number
B. Independent of Reynolds number
C. Dependent on the length of the pipe
D. None of these - A pump operating under specific conditions delivers insufficient quantity of liquid. This may be set right by________________?
A. Decreasing the size of the inlet pipe
B. Increasing the size of the inlet pipe
C. Lowering the pump position
D. Both B. and C. - A piezometer provided in the pipe measures__________________?
A. Friction factor
B. Static pressure
C. Dynamic pressure
D. None of these - The percentage slip in a reciprocating pump set is given by the % of (where, Q1 = actual discharge Q2 = theoretical discharge) ?
A. Q1/Q2
B. Q2/Q1
C. (Q2 – Q1)/Q1
D. (Q2 – Q1)/Q2 - Enamels and paints are generally _______________ fluid?
A. Rheopectic
B. Pseudo-plastic
C. Thixotropic
D. Dilatant
