A motor rotates at a constant speed of 25 rev/s. The power delivered by the motor, if it supplies a torque of 60 Nm, is

A motor drives a body along a straight line with a constant force. The power P developed by the motor must vary with time t as

A motor drives a body along a straight line with a constant force. The power P developed by the motor muat vary with time t as

The shaft of a motor rotates at a constant speed of 1800 rpm. What is the angle in radians it has turned through in one second ?

A motor car is moving with a constant speed . Is the car engine doing any work?

The force needed to pull the tape through an audio cassette player is 0.98 N. In operation the tape travels at a constant speed of 2.5 cm//s The motor consumes a power of 1.8 W. what percentage of the power input to the motor is required to pull the tape at its operating speed ?

An electric motor is designed to work at 100 V and draws a current of 6 A . The output power supplied by the motor is 150 W , and the remaining of the motor and its percentage efficiency?

A motor running at a rate of 1000 rpm can supply torque of 60 Nm, then the power developed is