Electromagnetic Induction & Alternating Currents (AIIMS Physics): Questions 46 - 50 of 51

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 500 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 350.00 or

Question number: 46

» Electromagnetic Induction & Alternating Currents » Induced EMF and Current

Appeared in Year: 1998

MCQ▾

Question

Two coil have a mutual inductance 0.005H . The current changes in first coil according to equation I=I0sinωt , where I0=2A and ω=100πrads . The maximum value of induced emf in second coil is – (AIPMT)

Choices

Choice (4) Response
a.

πV

b.

4πV

c.

3πV

d.

2πV

Question number: 47

» Electromagnetic Induction & Alternating Currents » AC Generator and Transformer

Appeared in Year: 2003

MCQ▾

Question

A generator produces a voltage V=240sin120tvolt where V is in volts and t in second. The frequency and r. m. s voltage are – [RPMT]

Choices

Choice (4) Response
a.

754Hzand170V

b.

19Hzand170V

c.

60Hzand240V

d.

19Hzand120V

Question number: 48

» Electromagnetic Induction & Alternating Currents » Alternating Currents

MCQ▾

Question

Alternating voltage V=300sin(200πt) is applied across the resistance 0.3kΩ . The rms value of current is equal to –

Choices

Choice (4) Response
a.

0.5A

b.

0.7A

c.

1.0A

d.

0.3A

Question number: 49

» Electromagnetic Induction & Alternating Currents » Alternating Currents

MCQ▾

Question

An alternative current is given as, I=3sin(30t) . The average value of current over a half – cycle –

Choices

Choice (4) Response
a.

π6

b.

3π

c.

π3

d.

6π

Question number: 50

» Electromagnetic Induction & Alternating Currents » LCR Series Circuit

Appeared in Year: 1987

MCQ▾

Question

In a LCR series circuit, R=10Ω , χL=8Ω and χC=6Ω the total impedance of the circuit is: [RPET]

Choices

Choice (4) Response
a.

10Ω

b.

17.2Ω

c.

10.2Ω

d. All of the above

Sign In