To maintain a rotar at uniform angular speed of 200 rad/s, an engine needs to transmit a torque of 180 Nm. What is the power required by engine? (Assume efficiency of engine to be 80%)

Question

To maintain a rotar at uniform angular speed of 200 rad/s, an engine needs to transmit a torque of 180 Nm. What is the power required by engine? (Assume efficiency of engine to be 80%) (A) 36kW (B) 18 kW (C) 45kW (D) 54kW

Tardigrade Admin · Accepted Answer

Power required for rotar, P=τ . W =36 kW Power of engine P0=(P/0.8)=45 kW

Q. To maintain a rotar at uniform angular speed of 200 rad/s, an engine needs to transmit a torque of 180 Nm. What is the power required by engine? (Assume efficiency of engine to be 80%)

36kW

18 kW

45kW

54kW

Power required for rotar,
$P = τ . W$
$= 36 kW$
Power of engine
$P_{0} = \frac{P}{0.8} = 45 kW$

Q. To maintain a rotar at uniform angular speed of 200 rad/s, an engine needs to transmit a torque of 180 Nm. What is the power required by engine? (Assume efficiency of engine to be 80%)

36kW

18 kW

45kW

54kW

Power required for rotar, P=τ.W =36kW Power of engine P0​=0.8P​=45kW

Power required for rotar,
$P = τ . W$
$= 36 kW$
Power of engine
$P_{0} = \frac{P}{0.8} = 45 kW$