CSIR Physical Sciences: Questions 83 - 86 of 401

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Question number: 83

» Mathematical Methods of Physics » Taylor & Laurent Series

Appeared in Year: 2012

MCQ▾

Question

The first few terms in the Laurent series for 1(z1)(z2) in the region 1 z 2 , and around z=1 is, (June)

Choices

Choice (4) Response

a.

2(z1)+5(z1)2+7(z1)3+

b.

12[1+z+z2+z3+][1+z2+z24+z38+]

c.

1z2[1+1z+1z2+][1+2z+4z2+]

d.

11zz(1z)2+(1z)3

Question number: 84

» Electronics and Experimental Methods » Frequency Dependence

Appeared in Year: 2014

MCQ▾

Question

An RC network produces a phase – shift of 300. How many such RC networks should be cascaded together and connected to a Common Emitter amplifier so that the final circuit behaves as an oscillator? (June)

Choices

Choice (4) Response

a.

12

b.

9

c.

6

d.

3

Question number: 85

» Quantum Mechanics » Spin-Orbit Coupling

Appeared in Year: 2012

MCQ▾

Question

The minimum energy of a collection of 6 non – interacting electrons of spin 12 and mass m placed in a one dimensional infinite square well potential of width L is – (December)

Choices

Choice (4) Response

a.

91π22mL2

b.

7π22mL2

c.

3π22mL2

d.

14π22mL2

Question number: 86

» Electronics and Experimental Methods » Device Characteristics

Appeared in Year: 2014

MCQ▾

Question

A current ip flows through the primary coil of a transformer. The graph of ip(t) as a function of time t is shown in the figure below.

The graph of current in primary coil as a function of time

The Graph of Current in Primary Coil as a Function of Time

In the given figure graph of current in primary coil as a function of time is given.

Which of the following graphs represents the current iS in the secondary coil? (June)

Choices

Choice (4) Response

a.

The current in secondary coil as a function of time: Choice A

The Current in Secondary Coil as a Function of Time: Choice A

In figure graph of the current in secondary coil as a function of time is shown.

b.

The current in secondary coil as a function of time: Choice B

The Current in Secondary Coil as a Function of Time: Choice B

In figure graph of the current in secondary coil as a function of time is shown.

c.

The current in secondary coil as a function of time: Choice C

The Current in Secondary Coil as a Function of Time: Choice C

In figure graph of the current in secondary coil as a function of time is shown.

d.

The current in secondary coil as a function of time: Choice D

The Current in Secondary Coil as a Function of Time: Choice D

In figure graph of the current in secondary coil as a function of time is shown.

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