1.  1, 2 and 3 are correct

2.  2 and 3 are correct

3.  1 and 2 are correct

4.  1 and 3 are correct

4
Correct Answer :

1 and 3 are correct


Explanation :
No Explanation available for this question

1.  circuit l for low values of R

2.  circuit II for values of R

3.  circuit I for values of R

4.  circuit II for low and high values of R

4
Correct Answer :

circuit l for low values of R


Explanation :
No Explanation available for this question

1.  20 x 10-6 N/m

2.  80 x 10-6 N/m

3.  10 x 10-6 N/m

4.  160 x 10-6 N/m

4
Correct Answer :

20 x 10-6 N/m


Explanation :
No Explanation available for this question

1.  increases because of stray capacitance as the frequency increases

2.  decreases because of stray capacitances as the frequency increases

3.  remain the same irrespective of the increase in frequency even if stray series capacitances are present

4.  none of these

4
Correct Answer :

decreases because of stray capacitances as the frequency increases


Explanation :
No Explanation available for this question

1.  frequency

2.  friction

3.  power consumed in current coil

4.  power consumed in potential coil

4
Correct Answer :

power consumed in potential coil


Explanation :
No Explanation available for this question

1.  power factor is unity

2.  load is balanced

3.  phase angle is between 600 and 900

4.  the load is purely inductive

4
Correct Answer :

the load is purely inductive


Explanation :
No Explanation available for this question

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