1. During constant volume process, there is no external work done as there is no change in
(A) Temperature
(B) Pressure
(C) Density
(D) Volume
2. In which cycle heat is supplied at constant volume
(A) Diesel
(B) Otto Cycle
(C) Carnot Cycle
(D) Joule Cycle
3. In which process the change in internal energy of a gas is equal to work done
(A) Adiabatic process
(B) Isothermal process
(C) Isochoric process
(D) Isobaric process
4. When the value of index “n” equals ratio of specific heat, the process is
(A) Isothermal
(B) Polytropic
(C) Adiabatic
(D) Throttling
5. Diesel cycle is also known as
(A) Constant temperature cycle
(B) Constant pressure cycle
(C) Constant volume cycle
(D) None
6. Otto Cycle is also known as
(A) Constant volume cycle
(B) Constant pressure cycle
(C) Constant temperature cycle
(D) None
7. Isothermal process is also known as
(A) Constant temperature process
(B) Polytropic process
(C) Adiabatic process
(D) Throttling process
8. Petrol engine works on
(A) Carnot Cycle
(B) Otto Cycle
(C) Diesel Cycle
(D) Dual cycle
9. In diesel cycle heat is added during
(A) Constant volume process
(B) Constant temperature process
(C) Constant pressure process
(D) Adiabatic process
10. In Carnot cycle heat is added during
(A) Isothermal compression
(B) Adiabatic expansion
(C) Isothermal expansion
(D) Adiabatic compression
11. In diesel cycle heat is rejected during
(A) Constant volume process
(B) Constant pressure process
(C) Constant temperature process
(D) Adiabatic expansion
12. A process where PV = constant is
(A) Polytropic process
(B) Isobaric process
(C) Adiabatic process
(D) Isothermal process
13. For same compression ratio, efficiency of diesel cycle is … Otto cycle
(A) Greater than
(B) Equal to
(C) Less than
(D) Constant
14. Constant pressure heating of air is performed in … cycle
(A) Otto
(B) Both b and c
(C) Carnot
(D) Diesel
15. Cycle with two constant volume and two adiabatic processes
(A) Carnot Cycle
(B) Otto cycle
(C) Diesel cycle
(D) Joule cycle
16. Thermal efficiency of petrol engine is about
(A) 15%
(B) 30%
(C) 50%
(D) 70%