Rajkamal Sir (Engineers Platform) 📚📚

1. The induction motors develop which of the following at low frequency of the order 1/2 Hz to 10 Hz? [SSC JE EE 2021]

5. A pole-changing squirrel cage induction motor employed in derricks has four, eight and twenty-four pole. The lowest speed is used in[SSC JE EE 2018]

4. One of the speed control methods of a 3 phase induction motor is………………. [SSC JE EE 2018]

3. Rotating magnetic fields are also used in 3 phase induction motors rotor for developing……………. [SSC JE EE 2018]

2. If the supply frequency to the stator is reduced the Induction motor goes to [SSC JE EE 2018]

1. If the torque of the induction motor at starting decreases, the……………..

5. The principle of operation of a 3-phase induction motor is most similar to that of [SSC JE EE 2018]

4. The power is supplied to the rotating device in an induction motor is by means of [SSC JE EE 2018]

3. No-load test on induction motor is conducted to find which of the following losses? [SSC JE EE 2018]

2. A three phase induction motor is similar to[SSC JE EE 2018]

1. What type of operate a direct-on-line starter consists of [SSC JE EE 2018]

5. In a 3-phase induction motor, the three-phase currents I ib and i, each of equal magnitude, but differing in phase by [SSC JE EE 2018]

4. Find the number of poles required, if the frequency is 50 Hz and speed of the motor is 500 rpm. [SSC JE EE 2018]

3. The availability of full-rated torque at starting is obtained from induction motor is [SSC JE EE 2018]

2. In three-phase induction, motor maximum torque is inversely proportional to the [SSC JE EE 2018]