[" 2.A machine can take out "1000kg" of mud per hour "],[" from a depth of "100m" .If efficiency of the machine "],[" is 0.9,calculate its power."]

A machine can take out 1000 kg of mud hour from a dept of 100 m . If efficieny of the machine is 0.9 , calculate its power.

A crane can lift up 10,000 kg of coal in 1 hour form a mine of 180 m depth. If the efficiency of the crane is 80 % , its input power must be (g = 10 ms^(-2)) .

Calculate the input power of a machine if it can take out 500 kg of wet clay hour from a depth of 200 m with an efficiency of 0.7 .

A pump can take out 7200 kg of water per hour from a well 100 m. deep. The power of pump, assuming its efficiency as 50% will be

A pump can take out 7200 kg of water per hour from a well 100 m. deep. The power of pump, assuming its efficiency as 50% will be

An engine consumes 20 kg of fuel per hour. The calorific value of the fuel is 12 Kcal g^(-1). Calculate the efficiency of the engine if the power of the engine is 42 kW.

A pump extracts water from 50m depth and ejects per sec 10 kg water with a velocity of 10m/s.Calculate is power.

A dam is situated at a height of 300 m above sea level. It supplies water to a power house which is at a height of 60m above sea level. 1000kg of water passes through the turbine per second. If the efficiency of the system is 80% the electrical power out is