Advertisements
Advertisements
प्रश्न
Fill in the boxe to show the corresponding energy transformation.
उत्तर
Mechanical energy ⇌ electrical energy
APPEARS IN
संबंधित प्रश्न
Why is a jack screw provided with a long arm?
A boy of weight 40 kgf climbs up the 15 steps, each 15 cm high in 10 s and a girl of weight 20 kgf does the same in 5 s. Compare:
- the work done, and
- the power developed by them. Take g = 10 N kg-1.
The power of a motor is 40 kW. At what speed can the motor raise a load of 20,000 N?
A vessel containing 50 kg of water is placed at a height 15 m above the ground. Assuming the gravitational potential energy at ground to be zero, what will be the gravitational potential energy of water in the vessel? (g = 10 m s-2)
A person of mass 50 kg climbs a tower of height 72 metres. Calculate the work done. (g = 9.8 m s−2).
What is meant by a translational motion? Give one example.
State the conditions of equilibrium for a rigid body.
A man lifts a mass of 10 kg from the floor to a shelf 4 meter high. If g = 10 ms-2, what is the work done?
How many joules are there in 1 mega joule?
Complete the following sentences:
The SI unit of work is ....... and of power is .......
Complete the following sentences:
Kilowatt is the unit of ....... and kWh is the unit of
Can work done be zero even if force acts on the body?
Define Translational motion.
An electric motor pump is 60% efficient and is rated 2.5 H.P. Calculate the maximum load it can lift through a height of 10m in 8 sec. (1 H.P. = 750 W).
Write the two main conditions are needed for work to be done?
