Electrical Machines
During no load test, an induction motor draws power

  only for the small copper loss.
  for copper loss and windage friction loss.
  for core loss and windage and friction loss.
  for core loss and copper loss.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
With the increase in speed of DC motor

 Both back emf as well as line current increase.
  Back emf increase but line current falls.
 Both back emf as well as line current fall.
 Back emf falls and line current increase.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Consider the following statements regarding the magnetization characteristics of a dc generator : 1. It represents the variation of field flux with field current. 2. Variation of open-circuit terminal voltage with field current is independent of speed 3. It is non-linear from zero to rated field current 4. It helps to determine the critical field resistance at a given speed 5. It always starts from the origin Which of these statements are correct ?

 1 and 4
 3 and 5
 1, 2 and 5
 2, 3 and 4

ANSWER DOWNLOAD EXAMIANS APP