output equation DEA

The output equation of a three-phase induction motor is given by:

• a) P = VI cos(θ)

• b) P = VI sin(θ)

• c) P = 3VI cos(θ)

• d) P = 3VI sin(θ)

The torque produced by a three-phase induction motor is proportional to which of the following?

• a) Current in the stator

• b) Voltage applied to the stator

• c) Slip of the motor

• d) Both a) and c)

What is the main difference between a single-phase and three-phase induction motor?

• a) The number of phases in the supply voltage

• b) The number of poles in the stator

• c) The type of rotor used

• d) The type of bearings used

What is the output equation of a three-phase induction motor?

• a) P = VI

• b) P = VI cos(θ)

• c) P = VI sin(θ)

• d) P = V^2/R

What is the power factor of an induction motor with an output power of 10 kW, an input voltage of 400 V, and an input current of 15 A, with a power factor angle of 30°?

• A. 0.8

• B. 0.87

• C. 0.9

• D. 0.93