A shaft rotating at 3000 rpm is transmitting a power of 6.28 KW.The magnitude of the driving torque is?

A shaft rotating at 3000 rpm is transmitting a power of 3.14 KW . The magnitude of the driving torque is

A shaft rotating at 6000 rpm is transmitting a power of 2pi kilowatt. Then the magnitude of the driving torque is

The grinding stone of a flour mill is rotating at 600 rad/sec. for this power of 1.2 k watt is used. the effective torque on stone in N–m will be :–

A shaft initially rotating at 1725 rpm is brought to rest uniformly in 20s. The number of revolutions that the shaft will make during this time is

A transmitter transmits a power of 10 kW when modulation is 50% . Power of carrier wave is

A flywheel whose moment of inertia about its axis of rotation is 16kg-m^(2) is rotating freely in its own plane about a smooth axis through its centre. Its angular velocity is 9rads^(-1) when a torque is applied to bring it to rest in t_(0) seconds find t_(0) if (a). The torque is constant and of magnitude 4 N-m (b). The magnitude of the torque after t second is given by kt .

A flywheel of mass 1 metric ton and radius 1 m is rotating at the rate of 420 rpm. Find the constant retarding torque required to stop the wheel in 14 rotations, assuming mass to be concentrated at the rim of the wheel.

A wheel is rotating at 900 rpm about its axis. When the power is cut off, it comes to rest in 1 min. The angular retardation (in rad s^(-2) ) is