A. lowest
B. highest
C. anything.
D. atmospheric
E. none of the above
Related Mcqs:
- The capacity of a compressor is 5 m /mih. 5 m /min refers to_______________?
A. standard air
B. free air
C. compressed air
D. compressed air at delivery pressure
E. air sucked - The compressor capacity with decrease in suction temperature_________________?
A. increases
B. decreases
C. remains unaffected
D. may increase or decrease depending on compressor capacity
E. increases upto certain limit and then decreases - For slow-speed large capacity compressor, following type of valve will be best suited________________?
A. poppet valve
B. mechanical valve of the corliss, sleeve, rotary or semirotary type
C. disc or feather type
D. any of the above
E. none of the above - The specific output per kg mass flow rate of a gas turbine (having fixed efficiencies of compressor and turine and fixed higher and lower temperature) with increase in pressure ratio will___________________?
A. increase first at fast rate and then slow
B. increase first at slow rate and then fast
C. decrease continuously
D. first increase, reach maximum and then decrease
E. none of the above - Out of the following, from where you will prefer to take intake for air compressor_________________?
A. from an air conditioned room maintained at 20°C
B. from outside atmosphere at 1°C
C. from coal yard side
D. from a side where cooling tower is located nearby
E. from any one of the above locations - Cylinder clearance in a compressor should be _________________?
A. as large as possible
B. as small as possible
C. about 50% of swept volume
D. about 100% of swept volume
E. none of the above - The clearance volume of the air compressor is kept minimum because____________________?
A. it allows maximum compression to be achieved
B. it greatly affects volumetric efficiency
C. it results in minimum work
D. it permits isothermal compression
E. none of the above - A compressor at high altitude will draw________________?
A. more power
B. less power
C. same power
D. more/less power depending on other factors
E. none of the above - The compressor efficiecny is the__________________?
A. isothermal H.P/indicated H.R
B. isothermal H.P./shaft H.R
C. total output/air input
D. compression work/motor input
E. none Of the above - The thermodynamic efficiency of rotary compressor is based on_______________?
A. isothermal compression
B. adiabatic compression
C. isentropic compression
D. polytropic compression
E. none of the above
