MDCAT Physics Chapter 8 online mcq test with answers for chapter 8 (Electromagnetism)

MDCAT Physics Chapter 8 Heat and Thermodynamics Online Test

Sr. #	Questions	Answers Choice
1	Most motorbikes have ____________ cylinder/s engine but cars usually have _________ cylinders on the same crankshaft.	Four , Six One , four two , five None of these
2	No of spark plugs needed in diesel engine is:	Four Five Six None of these
3	A certain engine coverts 20% of available heat energy into work. Then its efficiency will be:	20% 80% 50% None of these
4	Diesel engine coverts ____________ of available heat energy into work.	20% to 25% 25% to 30% 30% to 35% 35% to 40%
5	Petrol engine coverts ____________ of available heat energy into work.	20% to 25% 25% to 30% 30% to 35% 35% to 40%
6	One degree of thermodynamics scale of temperature is called:	Celsius Fahrenheit Kelvin Radian
7	The efficiency of a practical heat engine:	Can be 100% Can not be 100% Is always Zero None of these
8	Carnot engine is ____________ heat engine.	A reversible An irreversible An ideal Both A and C
9	If temperature of the sink is decreased, efficiency of a carnot engine.	Remains constant Decreases Increases None of these
10	What will be efficiency of carnot engine when it is operated between the temperatures 47^oC and 127 ^oC:	Reversible Irreversible Sometimes A and B None of these