A. Otto cycle is more efficient than Diesel cycle
B. Diesel cycle is more efficient than Otto cycle
C. efficiency depends on other factors
D. both Otto and Diesel cycles are equally efficient
E. none of the above
Related Mcqs:
- The index of compression n tends to reach ratio of specific heats y when____________________?
A. flow is uniform and steady
B. process is isentropic
C. process is isothermal
D. process is isentropic and specific heat does not change with temperature
E. process is isentropic and specific heat changes with temperature - A manufacturer claims to have a heat engine capable of developing 20 h.p. by receiving heat input of 400 kcal/mt and working between the temperature limits of 227° C and 27° C. His claim is__________________?
A. justified
B. not possible
C. may be possible with lot of sophistications
D. cost will be very high
E. theroretically possible - Change in enthalpy of a system is the heat supplied at___________________?
A. constant pressure
B. constant temperature
C. constant volume
D. constant entropy
E. N.T.P. condition - A gas is compressed in a cylinder by a movable piston to a volume one-half its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be___________________?
A. 300 Nm
B. 300,000 Nm
C. 30 Nm
D. 3000 Nm
E. 30,000 Nm - Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant________________?
A. pressure
B. temperature
C. volume
D. internal energy
E. entropy - Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant_______________?
A. pressure
B. temperature
C. volume
D. internal energy
E. entropy - Total heat of a substance is also known as __________________?
A. internal energy
B. entropy
C. thermal capacity
D. enthalpy
E. thermal conductance - Addition of heat at constant pressure to a gas results in________________?
A. raising its temperature
B. raising its pressure
C. raising its volume
D. raising its temperature and doing external work
E. doing external work - In a Carnot cycle, heat is transferred at_______________________?
A. constant pressure
B. constant volume
C. constant temperature
D. constant enthaply
E. any one of the above - Which law states that the specific heat of a gas remains constant at all temperatures and pressures______________________?
A. Charles’ Law
B. Joule’s Law
C. Regnault’s Law
D. Boyle’s Law
E. there is no such law
