Alternating Current

JEE Main 2024 (Online) 27th January Evening ShiftMCQEasy📈 Topic in 7% papers+4−1

Ques. 1JEE Main 2024, 27 January (Evening Shift)

Primary side of a transformer is connected to 230 V, 50 Hz supply. Turns ratio of primary to secondary winding is 10:1. Load resistance connected to secondary side is 46 . The power consumed in it is :

11.5 W
12.5 W
10.0 W
12.0 W

Answer

(1) 11.5 W

Solution

VsVp= NsNp Vs=230 110=23 V

P= Vs2R= 23 2346

=11.5 W

Answer: (1)

Keep practising — Alternating Current

Ques. 2JEE Main 2024, 27 January (Evening Shift)

A series LCR circuit with L= 100 mH, C= 10-3 F and R=10 , is connected across an ac source of 220 V, 50 Hz supply. The power factor of the circuit would be .

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