NEET Physics: Questions 771 - 775 of 2098

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 771

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

One 10 V, 60 W bulb is to be connected to 100 V line. The required induction coil has self-inductance of value (f = 50Hz)

Choices

Choice (4) Response

a.

0.052 H

b.

16.2 mH

c.

2.42 H

d.

1.62 mH

Question number: 772

» Electromagnetic Induction & Alternating Currents » Power in AC Circuits

Assertion-Reason▾

Assertion (Ꭺ)

A capacitor of suitable capacitance can be used in an ac circuit in place of the choke coil.

Reason (Ꭱ)

A capacitor blocks dc and allows ac only.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are false

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

Question number: 773

» Electromagnetic Induction & Alternating Currents » AC Generator and Transformer

MCQ▾

Question

The current in the primary coil of a transformer (assuming no power loss) as shown in fig. will be –

Transformer consist of two coils

Transformer Consist of Two Coils

In figure two coils transformer is shown with 220 Ω resistor. Vp is the primary coil voltage and VC is the secondary coil voltage.

Choices

Choice (4) Response

a.

10 -6 A

b.

1.0A

c.

0.01 A

d.

0.1 A

Question number: 774

» Experimental Skills » Screw Gauge

MCQ▾

Question

n the NaCl molecule, the separation between the nuclei of the two atom is about 2.36 Å (1 Å = 10 -10 m). The approximate location of the center of mass from the sodium atom, assuming the mass of chlorine atom 35.5 and mass of sodium atom is

22.98 Å

Choices

Choice (4) Response

a.

2.212 Å

b.

1.5 Å

c.

1.24 Å

d.

l Å

Question number: 775

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

MCQ▾

Question

A resistance of 300 Ω and an inductance of 1/π henry are connected in series to a ac voltage of 20 volt and 200 Hz frequency. The phase angle between the voltage and current is,

Choices

Choice (4) Response

a.

tan132

b.

tan143

c.

tan125

d.

tan134

Sign In