ExamVeda
Login
Home

If resistance is 20 ohms and inductance is 27 in a...

This question belongs to Electrical Engineering A.C Fundamentals, Circuits And Circuit Theory
A.C Fundamentals, Circuits and Circuit Theory
?

If resistance is 20 ohms. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be

Answer & Solution
Correct Answer: Option B
Let's discuss the solution. Join the discussion
Examveda
Question posted by Examveda
Community

Join the Discussion

3 Comments
Dipendra Rathore
Dipendra Rathore 6 years ago
It's 2H not 27 now T=L/R
T=2/20=0.1s
Copshot Akid
Copshot Akid 7 years ago
I believe the question is wrong, it's not 20Q it's actually 200. And time constant for rl ckt is L/R ie 27/200 which gives us 0.135 and hence option B
Govind Barde
Govind Barde 7 years ago
Explanation
Keep Learning

Related Questions on A.C Fundamentals, Circuits and Circuit Theory

Which of the following refers to a parallel circuit?
A. The current through each element is same B. The voltage across element is in proportion to it's resistance value C. The equivalent resistance is greater than any one of the resistors D. The current through any one element is less than the source current
In any A.C. circuit always
A. Apparent power is more than actual power B. Reactive power is more than apparent power C. Actual power is more than reactive power D. Reactive power is more than actual power
The transient currents are associated with the
A. Changes in the stored energy in the inductors and capacitors B. Impedance of the circuit C. Applied voltage to the circuit D. Resistance of the circuit
The inductance of a coil can be increased by
A. Increasing core length B. Decreasing the number of turns C. Decreasing the diameter of the former D. Choosing core material having high relative permeability
More Related Questions on A.C Fundamentals, Circuits and Circuit Theory