1
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following combinations should be selected for better tuning of an L-C-R circuit used for combination ?
A
R = 20 $$\Omega $$, L = 1.5 H, C = 35 $$\mu $$F
B
R = 25 $$\Omega $$, L = 2.5 H, C = 45 $$\mu $$F
C
R = 15 $$\Omega $$, L = 3.5 H, C = 30 $$\mu $$F
D
R = 25 $$\Omega $$, L = 1.5 H, C = 45 $$\mu $$F
2
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
An inductor 20 mH, a capacitor 50 $$\mu F$$ and a resistor 40 $$\Omega $$ are connected in series across a source of emf V = 10 sin 340t. The power loss in A.C. circuit is
A
0.76 W
B
0.89 W
C
0.51 W
D
0.67 W
3
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
A small signal voltage V(t) = V0 sin$$\omega $$t is applied across an ideal capacitor C
A
Current $$I(t)$$ is in phase with voltage $$V(t)$$.
B
Current $$I(t)$$ leads voltage V(t) by 180o
C
Current $$I(t)$$, legs voltage $$V(t)$$ by 90o.
D
Over a full cycle the capacitor C foes not consume any energy from the voltage source.
4
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Change Language
A series R-C circuit is connected to an alternating voltage source. Consider two situations :
(a)  When capacitor is air filled.
(b)  When capacitor is mica filled.
Current through resistor is $$I$$ and voltage across capacitor is $$V$$ then
A
$${i_a} > {i_b}$$
B
$${V_a} = {V_b}$$
C
$${V_a} < {V_b}$$
D
$${V_a} > {V_b}$$
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