2.Damper winding is provided in synchronous motor

3.Compare d-axis and q-axis reactance

4.Which type of synchronous motor can develop more power

5.Synchronous motor is a

6.If the synchronous motor is under excited then the machine power factor is

7.In synchronous motor the V curve represents the relation between

8.synchronous motor is a

9.operating power factor of a over excited synchronous motor is ---

10.In a experimental set up for the determination of Xd and Xq the voltage induced in the armature winding is having a frequency of

11.If the synchronous motor is running at synchronous speed then damper winding produces

12.Synchronous motor can operate at

13.What is the ratio of no load speed to full load speed of a 200 kVA, 12 pole, 2200 V, 3 phase, 60 Hz synchronous motor ?

14.In a synchronous motor if the back emf generated in the armature at no load is approximately equal to the applied voltage, then

15.Which of the following motors is non-self starling ?

16.The constant speed of a synchronous motor can be changed to new fixed value by

17. A 3 phase, 400 V, 50 Hz, 4 pole synchronous motor has a load angle of 10° electrical. The equivalent mechanical degrees will be

18.The hunting in a synchronous motor takes place when

19.Hunting in a synchronous motor cannot be due to

20. $\left\{\sqrt{\left[Vt\cos\theta-IaRa\right]^2+\left[Vt\sin\theta+IaRa\right]^2}\right\}$ 

 A 3-phase synchronous motor having a per phase impedance of 0.25+2.5 ohms at line voltage of 220 volts takes a current of 10 A at 0.8 p.f. leading.Then internal line to line voltage is ----

21.In a 3-phase. 400 V, 50 Hz salient pole synchronous motor, the maximum power is obtained when the load angle is

22.In a three phase synchronous motor, the magnitude of field flux

23.The negative phase sequences in a three phase synchronous motor exist when

The speed regulation of a 3 phase synchronous motor is

25.Which of the following machine can acts as an condensor