Chapter 3 THERMODYNAMICS PROCESSES AND CYCLES MCQs 16 min Score: 0 Attempted: 0/16 Subscribe 1. During constant volume process, there is no external work done as there is no change in (A) Temperature (B) Pressure (C) Density (D) VolumeShow All Answers 2. In which cycle heat is supplied at constant volume (A) Diesel (B) Otto Cycle (C) Carnot Cycle (D) Joule CycleShow All Answers 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 processShow All Answers 4. When the value of index ānā equals ratio of specific heat, the process is (A) Isothermal (B) Polytropic (C) Adiabatic (D) ThrottlingShow All Answers 5. Diesel cycle is also known as (A) Constant temperature cycle (B) Constant pressure cycle (C) Constant volume cycle (D) NoneShow All Answers 6. Otto Cycle is also known as (A) Constant volume cycle (B) Constant pressure cycle (C) Constant temperature cycle (D) NoneShow All Answers 7. Isothermal process is also known as (A) Constant temperature process (B) Polytropic process (C) Adiabatic process (D) Throttling processShow All Answers 8. Petrol engine works on (A) Carnot Cycle (B) Otto Cycle (C) Diesel Cycle (D) Dual cycleShow All Answers 9. In diesel cycle heat is added during (A) Constant volume process (B) Constant temperature process (C) Constant pressure process (D) Adiabatic processShow All Answers 10. In Carnot cycle heat is added during (A) Isothermal compression (B) Adiabatic expansion (C) Isothermal expansion (D) Adiabatic compressionShow All Answers 11. In diesel cycle heat is rejected during (A) Constant volume process (B) Constant pressure process (C) Constant temperature process (D) Adiabatic expansionShow All Answers 12. A process where PV = constant is (A) Polytropic process (B) Isobaric process (C) Adiabatic process (D) Isothermal processShow All Answers 13. For same compression ratio, efficiency of diesel cycle is ⦠Otto cycle (A) Greater than (B) Equal to (C) Less than (D) ConstantShow All Answers 14. Constant pressure heating of air is performed in ⦠cycle (A) Otto (B) Both b and c (C) Carnot (D) DieselShow All Answers 15. Cycle with two constant volume and two adiabatic processes (A) Carnot Cycle (B) Otto cycle (C) Diesel cycle (D) Joule cycleShow All Answers 16. Thermal efficiency of petrol engine is about (A) 15% (B) 30% (C) 50% (D) 70%Show All Answers