Alternating quantities

Explanation of question 3

The value of a sinusoidal current is adjusted to produce the same heating effect as a certain direct current. This alternating current will have a value of

  1. 0.637 of the direct current
  2. 0.707 of the direct current
  3. equal to the direct current
  4. 1.414 times that of the direct current peak value .

The answer is :- 3 The equivalent dc current with the same heating effect is the definition of the value of the  rms current

BACK
page (tq0703ex)
Some material Copyright John Bowyer G4KGS.
Click here for important Copyright information
Web Space provided by Hostroute.com Ltd
Contact details