GATE (Graduate Aptitude Test in Engineering) Physics: Questions 538 - 541 of 659

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Question 538

Appeared in Year: 2007

Question

MCQ▾

A charged capacitor (C) is connected in series with an inductor (L) . When the displacement current reduces to zero, the energy of the LC circuit is –

Choices

Choice (4)Response

a.

Stored entirely in its electric field

b.

Radiated out of the circuit.

c.

Stored entirely in its magnetic field

d.

Distributed equally among its electric and magnetic fields

Question 539

Appeared in Year: 2007

Question

MCQ▾

In the circuit shown, the ports and are in the state . The circuit is now subjected to two complete clock pulses. The state of these ports now becomes –

Circuit Consists of Two JK Flip Flops

Choices

Choice (4)Response

a.

b.

c.

d.

Question 540

Appeared in Year: 2008

Question

MCQ▾

The eigen values of the matrix are –

Choices

Choice (4)Response

a.

when

b.

when

c.

when

d.

since the matrix is unitary

Question 541

Type-I and Type-II Superconductors

Appeared in Year: 2007

Question

MCQ▾

A solid superconductor is placed in a external magnetic field and then cooled below its critical temperature. The superconductor –

Choices

Choice (4)Response

a.

Expels out its magnetic flux because the surface current induces a field in the direction opposite to the applied magnetic field.

b.

Expels out its magnetic flux because it behaves like an anti – ferromagnetic material.

c.

Expels out its magnetic flux because it behaves like a paramagnetic material.

d.

Retains its magnetic flux because the surface current supports it.

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