Question

compare between petrol engine, diesel engine and electrical engine on the basis of efficiency, torque, emission and no. of cylinders

Answer 1

Efficiency:> electric engine has more efficiency as compared to others.
Power/torque:> electric engine supplies more power and torque as compared to other.
Emmision:> electric engine has almost zero emission , diseal engine has max emission
No of cylinders:> it depends upon size of engine and what output u want?