NEET 2016 Phase 1 | Alternating Current Question 33 | Physics

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

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

0.76 W

0.89 W

0.51 W

0.67 W

AIPMT 2015

MCQ (Single Correct Answer)

-1

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

$${i_a} > {i_b}$$

$${V_a} = {V_b}$$

$${V_a} < {V_b}$$

$${V_a} > {V_b}$$

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

A resistance 'R' draws power 'P' when connected to an AC source. If an inductance is now placed in series with the resistance, such that the impedance of the circuit becomes 'Z'. the power drawn will be

$$P\left( {{R \over Z}} \right)$$

$$P{\left( {{R \over Z}} \right)^2}$$

$$P\sqrt {{R \over Z}} $$

AIPMT 2014

MCQ (Single Correct Answer)

-1

A transformer having efficiency of 90% is working on 200 V and 3 kW power supply. If the current in the secondary coil is 6 A, the voltage across the secondary coil and the current in the primary coil respectively are

300 V, 15 A

450 V, 15 A

450 V, 13.5 A

600 V, 15 A

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