075/2022

Total Marks : 100 Marks
Time : 1 hour and 30 minutes

1. ൧ ‏عل‎ voltage of 40 V is applied across series connected resistors 4 Q and 3 ൨. Find the
current through 2 Q resistance if it is connected across 4 Q resistor.

(A) 6.14 (8) 32A
(൭ 122A (D) 13A
2. Maximum power transferred from source to load when its Thevenin’s equivalent
resistance is the load resistance.
(^) greater than (B) 1655 than
(C) equal to (D) half

3. Three resistors Rag, ಸ್ಟ and Ro, are connected in delta whose values are in the ratio
1 : 2 : 4, then the ratio of its equivalent resistance in star (௩, : ಸ್ವ: 8) is
(^) 3:2:4 (B) 2:1:4
(C) 3:1:6 (D) 4:1:8

4. The reactive power of a RLC circuit connected to an ac source is proportional to
(A) Average energy stored in the electric field
(B) Average energy stored in the magnetic field
(C) Sum of energy stored in electrical field and magnetic field
(D) Difference between energy stored in electrical field and magnetic field

5. The resonant frequency of a RLC series circuit is ಗೃ. If the values of parameters are
halved, then the resonant frequency is
(A) 5 ൯ ೧/2
(©) ٥ (D) 2

6. If the amplitude of the voltage applied to a R 8 Q, X,= 6 Q series circuit is 150 V. The

current through the circuit is A.
(^) 15 (B) 10.6
(ம 1.5 (D) 1.06

7. Two coils A and 8 of same material are connected in parallel across the supply. Coil A
has diameter and length double that of coil B. The heat produced by the coil A is
that of coil B.

(^) more than (B) 1655 than
(C) 60024 (D) None of these
A 3 075/2022
[P.T.O.]