Rajkamal Sir (Engineers Platform) 📚📚

5. Bridge of four resistors can function as a normal _______________.

4. ____________ rectifier consists of center-tapped transformer.

3. Half power is wasted in __________ rectifiers?

2. How many diodes a half wave rectifier has?

1. ________ possess low power ratings in comparison to rectifiers.

5. While using three-phase transformers, care is taken about the third harmonics current in the system. This is present when the transformer set is delta on either side.

4. A 400 V, 10 KVA transformer at 50 Hz is operated at a frequency of 40 Hz; then the humming ___________

3. When we magnetize the ferromagnetic core of the transformer, the core length_______ and it ______ when demagnetized.

2. If a paramagnetic core is used in the place of the ferromagnetic core of the transformer, then magnetostriction will ___________

8. If one of the transformers is removed from the bank of only delta-delta, then it behaves with 58% power delivery.

5. The adjustment of position of shading bands, in an energy meter is done to provide

4. In a 3-phase power measurement by two wattmeter method the reading of one of the wattmeter was zero. The power factor of the load must be

3. In a 3-phase power measurement by two wattmeter method, both the watt meters had identical readings. The power factor of the load was

2. In a low power factor wattmeter the compensating coil is connected

1. In a low power factor wattmeter the pressure coil is connected