Question
Write the definition of efficiency of a heat engine.
✓
Answer
The ratio of the mechanical work W provided by some heat and the heat Q taken from the source by the engine is called the efficiency of the engine. This is represent by. Efficiency of heat engine
$\eta=\frac{W}{Q}$
$\eta=\frac{W}{Q}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A particle is in linear simple harmonic motion between two points, A and B, 10cm apart. Take the direction from A to B as the positive direction and give the signs of velocity, acceleration and force on the particle when it is:
At the mid-point of AB going towards A.
Suppose the tube in the previous problem is kept vertical with B upward. Water enters through B at the rate of 1cm3/s . Repeat parts (a), (b) and (c). Note that the speed decreases as the water falls down.
What is a variable force?
If the earth is regarded as a hollow sphere, then what is the weight of an object below surface of the earth?
State the number of significant figures in the following:
6.032 N m-2
What should be the value of Reynolds number for streamline fluid flow in a narrow tube?
What is the apparent weight felt by a person in an elevator, when it is accelerating: (i) upward (ii) downward?
Give an example of:
A constant which has no unit.
A constant which has no unit.
Underline the correct alternative:
When a conservative force does positive work on a body, the potential energy of the body increases/ decreases/ remains unaltered.
When a conservative force does positive work on a body, the potential energy of the body increases/ decreases/ remains unaltered.
A 1kg block situated on a rough incline is connected to a spring of spring constant 100Nm-1 as shown in. The block is released from rest with the spring in the unstretched position. The block moves 10cm down the incline before coming to rest. Find the coefficient of friction between the block and the incline. Assume that the spring has a negligible mass and the pulley is frictionless.
