IIT JEE Questions And Answers :: Electromagnetic Induction Electromagnetic Waves: part4



IIT JEE : Electromagnetic Induction Electromagnetic Waves QUESTIONS AND ANSWERS :: part4 : 1 to 5

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

1.The frequency of ac in India is

50 Hz
50 kHz
1420 MHz
60 kHz

2.The alternating voltage which we use in house has a peak value of nearly

220 V
280 V
311 V
300 V

3.A step down transformer reduces 200 V to 110 V. The primary draws 5 amp. of current and secondary supplies 9 ampere. The efficiency of transformer is

90%
80%
60%
70%

More Electromagnetic Induction Electromagnetic Waves QUESTIONS AND ANSWERS available in next pages

    Health is the greatest gift, contentment is the greatest wealth -Buddha
If your ship doesn’t come in, swim out to meet it!-Jonathan Winters