Advertisements
Advertisements
प्रश्न
In a transformer, the number of turns in the primary and the secondary are 410 and 1230 respectively. If the current in primary is 6A, then that in the secondary coil is
विकल्प
2 A
18 A
12 A
1 A
Advertisements
उत्तर
2 A
APPEARS IN
संबंधित प्रश्न
State the principle of the step-down transformer and its working.
How is the e.m.f. across primary and secondary coils of a transformer related with the number of turns of the coil in them?
Complete the following sentence :
……… energy is converted into …………energy by an electric motor.
How are the e.m.f in the primary and secondary coils of a transformer related with the number of turns in these coils?
A circular coil of 100 turns with a cross-sectional area of 1 m2 is kept with its plane perpendicular to the magnetic field of 1 T. The magnetic flux linkage is ______.
An ideal transformer has 100 turns in the primary and 250 turns in the secondary. The peak value of the AC is 28 V. The rms secondary voltage is nearest to ______
State whether true or false. If false, correct the statement.
A transformer can step up direct current.
Explain the working of the transformer.
The 300 turn primary of a transformer has resistance 0.82 Ω and the resistance of its secondary of 1200 turns is 6.2 Ω. Find the voltage across the primary if the power output from the secondary at 1600V is 32 kW. Calculate the power losses in both coils when the transformer efficiency is 80%
Two coils P and Q are kept near each other. When no current flows through coil P and current increase in coil Q at the rate 10A/s, the emf in coil P is 15mV. When coil Q carries no current and current of 1. 8A flows through coil P, the magnetic flux linked with the coil Q is ______.
