An electric motor creates a tension of `4500` newton in a hoisting cable and reels it at the rate of `2 m//s`. What is the power of the motor ?

An electric motor exerts a force of 40 N on a cable and pulls it by a distance of 30 m in one minute. The power supplied by the motor (in Watts ) is

What is the principle of an electric motor?

An electric motor in a crane while lifting a load produces a tension of 4000 N in the cable attached to the load. If the motor is winding the cable at the rate of 3ms^(-1) , the power of the motor espressed in kilo watt units must be

An electric motor exerts a constant torque 5Nm on a fly wheel by which it is rotated at the rate of 420 rpm The power of motor is

An electric motor rotates a wheel at a constant angular velocity (omega) while opposing torque is tau . The power of that electric motor is

An electric motor operating on a 30V supply draws a current of 10A and yields mechanical power of 120W. What is the efficiency of the motor? How much energy is lost as heat in 2h?

A motor rotates a pulley of radius 25cm at 20rpm. A rope around the pulley lifts a 50kg block, What is the power output of the motor?