During base load operation, the best method of controlling compressor is ___________________?
A. start-stop motor
B. constant speed unloader
C. relief valve
D. variable speed
E. none of the above
A. start-stop motor
B. constant speed unloader
C. relief valve
D. variable speed
E. none of the above
A. volume of air inhaled at working conditions
B. volume of air inhaled at N.T.P. conditions
C. volume at 0°C and 1 kg/cm2
D. volume at 20°C and 1 kg/cm2
E. none of the above
A. high thermal efficiency
B. reduction in compressor work
C. decrease of heat loss in exhaust
D. maximum work output
E. none of the above
A. isothermal
B. isentropic
C. adiabatic
D. isochoric
E. isobaric
A. 3 m3/mt
B. 1.5 m3/mt
C. 18 m3/mt
D. 6 m3/mt
E. 0.75 m3/mt
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
A. increases
B. decreases
C. first increases and then decreases
D. first decreases and then increases
E. remains same