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
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 - The capacity of compressor will be highest when its intake temperature is___________________?
A. lowest
B. highest
C. anything.
D. atmospheric
E. none of the above - An ideal air compressor cycle without clearance on p-v diagram can be represented by following processes________________?
A. one adiabatic, two isobaric, and one constant volume
B. two adiabatic and two isobaric
C. two adiabatic, one isobaric and one constant volume
D. one adiabatic, one isobaric and two constant volume
E. two isobaric, two adiabatic and one constant volume - An ideal air compressor cycle with clearance on p-v diagram can be represented by following processes_______________?
A. one adiabatic, two isobaric, and one constant volume
B. two adiabatic and two isobaric
C. two adiabatic, one isobaric and one constant volume,
D. one adiabatic, one isobaric and two constant volume
E. two isobaric, two adiabatic and one constant volume - For supplying intermittent small quantity of air at high pressure, following compressor is best suited__________________?
A. centrifugal
B. reciprocating
C. axial
D. screw
E. turbo jet - Axial flow compressor has the following advantage over centrifugal compressor__________________?
A. larger air handling ability per unit frontal area
B. higher pressure ratio per stage
C. aerofoil blades are used
D. higher average velocities
E. none of the above - The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before entering the compressor is____________________?
A. heated
B. compressed air before entering the combustion chamber is heated
C. bled gas from turbine is heated and readmitted for complete expansion
D. exhaust gases drive the compressor
E. part of exhaust gases are heated and mixed up with atmospheric air to utilise exhaust heat - 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 - 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
