1
NEET 2016 Phase 2
+4
-1
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 2
+4
-1
The potential differences across the resistance, capacitance and inductance are 80 V, 40 V and 100 V respectively in an L-C-R circuit. The power factor of this circuit is
A
0.4
B
0.5
C
0.8
D
1.0
3
NEET 2016 Phase 2
+4
-1
A 100 $$\Omega$$ resistance and a capacitor of 100 $$\Omega$$ reactance are connected in series across a 220 V source. When the capacitor is 50% charged, the peak value of the displacement current is
A
2.2 A
B
11 A
C
4.4 A
D
11$$\sqrt 2 A$$
4
NEET 2016 Phase 1
+4
-1
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.
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