Q.41 A resistor of resistance R Ω is connected in series with a coil having an inductance of L henry. If XL is the value of inductive reactance, what is the value of net impedance of the circuit?

Q.40 Which of the following lamps is used for the determination of polarity of DC mains?Ans 1. Neon discharge lamp2. Sodium vapour lamp3. Mercury vapour lamp4. Carbon arc lampCorrect Ans Provided: 1

Q.32 Power factor of an IM is low at ________.Ans 1. half load2. quarter load3. no load4. full loadCorrect Ans Provided: 3

Q.99 Three identical coils connected in delta to a 415 V, 3-phase supply take a total power of 50 kW and line currents of 70 A. Determine the total kVA taken by the coils.Ans 1. 16.77 kVA2. 50.32 ...

Q.65 Which of the following motors DO/DOES NOT use three-point starters?Ans 1. DC shunt motor2. DC series motor3. DC compound motor4. Both DC shunt and compound motorsCorrect Ans Provided: 2