Advertisements
Advertisements
प्रश्न
Name the transformer used in the power transmitting station of a power plant.
Advertisements
उत्तर
A step-up transformer is used in the power transmitting station of a power plant.
APPEARS IN
संबंधित प्रश्न
Derive an expression for ratio of e.m.f.s and currents in terms of number of turns in primary and secondary coil.
The transformer is used in ______ current circuits.
What is the function of a transformer in an a.c. circuit? How do the input and output powers in a transformer compare?
Describe, with the help of a suitable diagram, the working principle of a step-up transformer. Obtain the relation between input and output voltages in terms of the number of turns of primary and secondary windings and the currents in the input and output circuits.
What is a transformer? On what principle does it work?
Draw the effective equivalent circuit of the circuit shown in figure, at very high frequencies and find the effective impedance.
Magnetic flux Φ in weber in a closed circuit of resistance 10Ω varies with time Φ (sec) as Φ = 6t2 - 5t + 1. The magnitude of induced current at t = 0.25s is ______.
The primary coil of a transformer has 60 turns whereas its secondary coil has 3000 turns.
If a 220 V ac voltage is applied to the primary coil, how much emf is induced in the secondary coil?
Derive the equation for a transformer.
In an ideal transformer, the turns ratio is `N_p/N_s = 1/2`. The ratio Vs : Vp is equal to (the symbols carry their usual meaning):
