A transformer is used to light 140 Watt, 24 volt lamp from 240 volts A.C. mains. If the current in the mains is 0.7 A, then the efficiency of transformer is

Options :
  1. 63.8 %
  2. 84%
  3. 83.3 %
  4. 48 %
Answer and Explanation :-

Answer: Option 3

Explanation:

Sorry there is no explanation for this answer. Please help others by posting your response below

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

Previous Question : The power is transmitted from a power house on high voltage AC because

Next Question : The core of transformer is laminated so that

Click here for online test on Electrostatics

Responses


 (Getemail alerts when others member replies)

More questions and answers on Indian History :-








As we sail in the voyage of life,the love and joy we shared count more than anything else.Let them feel the rhythm of our heart,share them the music of our soul,for a meaningful, fulfilling moments of today,for a hopeful, promising and joyful tomorrow
-Angelica Hopes Rhythm Of A Heart Music Of A Soul