Electric Machine Daily Quiz #15

Internal unity pf means-

1. Angle between F r and F s is Zero
2. Angle between F r and F ar is Zero
3. Angle between I a and E f is Zero
4. Angle between V and E f is Zero

An overexcited machine has_______ armature reaction

1. Demagnetizing
2. Magnetizing
3. Zero
4. Infinite

An Overexcited generator behaves like-

1. Inductor
2. Capacitor
3. Capacitor or Inductor, depends on the load
4. Reactor

An overexcited motor is used-

1. To consume Lagging VARs
2. To Supply Lagging VARs
3. To Supply Leading VARs
4. None

The angle between E f and V is called-

1. Power angle
2. Load angle
3. Torque angle
4. Rotor angle
5. 1,2