List of top Physics Questions on Work Power and Energy asked in KEAM

The power generated by a turbine operated by the fall of water from a height of 100 m at the rate of $24\text{ kg s}^{-1}$ is 21 kW. The percentage loss in power is
A non-conservative force is one for which
A particle is subjected to a force F = 3x$^2$. Calculate the work done in moving with particle from x=0 to x = 2 m.
Three bulbs of power 10 W, 25 W, and 50 W are connected parallel across a voltage source \( V \). What is the effective power of the combination?
If \( \vec{F} \) and \( \vec{S} \) represent force and displacement respectively, then which of the following statements is true:
If $P$ is the pressure at which the heart is pumping the blood and the volume of blood pumped per second is $V$, then the power of the heart is given by
An object released from certain height h, from the ground rebounds to a height h/4after striking the ground. The fraction of the energy lost by it is