Rajkamal Sir (Engineers Platform) 📚📚

4. The degree of mechanical vibrations produced by the laminations of a transformer depends on

3. A transformer core is laminated to

2. In a transformer the energy is conveyed from primary to secondary

1. Which of the following does not change in a transformer ?

5. For a frequency of 200 Hz, the time period will be

4. For a sine wave with peak value Imax the r.m.s. value is

3. Power factor of the system is kept high

2. The r.m.s. value and mean value is the same in the case of

1. Which of the following coil will have large resonant frequency?

5. The ratio of active power to apparent power is known as factor.

4. The r.m.s. value of alternating current is given by steady (D.C.) ) current which when flowing through a given circuit for a given time produces

3. Inductance affects the direct current flow

2. The power is measured in terms of decibels in case of

1. The 'time constant' of a series RC circuit is