GATE (Graduate Aptitude Test in Engineering) Geology & Geophysics (GG): Questions 114 - 119 of 825

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Question 114

Appeared in Year: 2012

Question MCQ▾

The vector potential due to a magnetic moment at a point is given by . If is directed along the positive z – axis, the x – component of the magnetic field, at the point , is – (June)

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 115

Appeared in Year: 2012

Question MCQ▾

Charges Q, Q and -2Q are placed on the vertices of an equilateral triangle ABC of sides of length , as shown in the figure

Three Charges at the Vertices of Triangle

The dipole moment of this configuration of charges, irrespective of the choice of origin, is – (June)

Choices

Choice (4)Response

a.

b.

c.

d.

0

Edit

Question 116

Appeared in Year: 2012

Question MCQ▾

Consider an infinite conducting sheet in the XY – plane with a time dependent current density , where K is constant. The vector potential at is given by . The magnetic field is –

(December)

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Passage

The magnetic field of the mode of a rectangular waveguide of dimensions as shows in the figure is given by , where and are in cm.

The Magnetic Field of a Mode of a Rectangular Waveguide

Question 117 (1 of 2 Based on Passage)

Question MCQ▾

The dimensions of the waveguide are –

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 118 (2 of 2 Based on Passage)

Question MCQ▾

The entire range of frequencies for which the mode will propagate is:

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 119

Appeared in Year: 2011

Question MCQ▾

A constant electric current I in an infinitely long straight wire is suddenly switched on at . The vector potential at a perpendicular distance from the wire is given by . The electric field at a distance is –

(December)

Choices

Choice (4)Response

a.

b.

c.

0

d.

Edit