Rajkamal Sir (Engineers Platform) 📚📚

4. If R2 is the resistance of secondary winding of the transformer and K is the transformation ratio then the equivalent secondary resistance referred to primary will be

3. Two transformers operating in parallel will share the load depending upon their

2. What will happen if the transformers working in parallel are not connected with regard to polarity ?

1. In a transformer the tappings are generally provided on

5. The power transformer is a constant

4. The purpose of providing iron core in a step-up transformer is

3. Greater the secondary leakage flux

2. Spacers are provided between adjacent coils

1. No-load current of a transformer has

5. Pure inductive circuit takes power from the A.C. line when

4. In a purely inductive circuit

3. Which of the following waves has the highest value of peak factor ?

2. The product of apparent power and cosine of the phase angle between circuit voltage and current is