Rajkamal Sir (Engineers Platform) 📚📚

4. If the no-load voltage of a 3-phase, 440 V, 50 Hz alternator is 495 V, then its voltage regulation is: [SSC JE EE 2020]

3. What is the frequency of the generated EMF in a six-pole alternator running at 1200 rpm? [SSC JE EE 2020]

2. Damper windings are used in synchronous machines to provide: [SSC JE EE 2020]

1. In order to make concentric winding in a alternator: [SSC JE EE 2020]

5. In an alternator at leading power factor, the armature flux……………. the rotor flux. [SSC JE EE 2021]

4. In a synchronous motor, which of the following losses is NOT met by motor AC input? [SSC JE EE 2021]

3. Ignoring the effect of armature reaction, if excitation of a synchronous motor running with constant load is increased, its torque angle must: [SSC JE EE 2021]

2. Synchronous impedance method of finding voltage regulation of a synchronous motor is also known as: [SSC JE EE 2021]

1. Which of the following torques is NOT associated with a synchronous motor? [SSC JE EE 2021]

5. In an alternator, the nature of armature reaction at zero power factor leading loads is………..[SSC JE EE 2021]

4. Which of the following statements does NOT come under the advantages of stationary armature in an alternator? [SSC JE EE 2022]

3. Damper windings are used in synchronous generator to: [SSC JE EE 2022]

2. Over excited synchronous motors are used to: [SSC JE EE 2022]