A 7.46 watt engine pulls water to the height of 80 in. If the efficiency of the .engine be 80% then what is the amount of water lifted per minute?

Water is lifted to a vertical height of 90 m using a 7.46 kW engine. If the efficiency of the engine is 80% , find the amount of water lifted in a minute.

An engine is pulling up a train at 54 km*h^(-1) along a plane of slope 1/(200) . Total mass of the engine and the train is 200 tonne (metric ton) , and the frictional force per tonne (metric ton) is 98 N . If the efficiency of the engine is 85% , what is the power of the engine ?

A steam engine delivers 5.4 xx 10^(8)J of work per minute and services 3.6 xx 10^(9) J of heat per minute from its boiler. What is the efficiency of the engine? How much heat is wasted per minute?

What is the energy required to raise water through 20m , at 90 litre per minute ?

3g of hydrated caclium chloride yields 1.52 g of the anhydrous salt on heating. What is the percentage of water present in the hydrated salt? Find the quantity of water associated per mole of the anhydrous salt.

A pump lifts 5000kg of water per minute through a height of 12m. Find the power of the engine if 30 % of energy is wasted.

The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is

A motor can pump up water to fill a tank of volume 500 m^3 in 25 minutes, which is placed at a height of 20m. If efficiency of the motor is 40% , calculate the power of the motor.