Time Left - 12:00 mins
UGC-NET 2018: (Electromagnetic Theory) SpeedTest Quiz 14
Attempt now to get your rank among 291 students!
Question 1
Consider the following cables:
1. Single mode optical fibre cable
2. Multimode optical fibre cable
3. Graded-index optical fibre cable
4. Co-axial cable
The correct sequence in increasing order of data rate is
1. Single mode optical fibre cable
2. Multimode optical fibre cable
3. Graded-index optical fibre cable
4. Co-axial cable
The correct sequence in increasing order of data rate is
Question 2
Given 
If S represents the portion of the sphere 
for 
is ___________.
If S represents the portion of the sphere for is ___________. Question 3
A positive charge q is placed at x= 0 between two infinite metal plates placed at x= —d and at x = +d respectively. The metal plates lie in the yz plane.
The charge is at rest at t= 0, when a voltage +V is applied to the plate at —d and voltage —V is applied to the plate at x= +d. Assume that the quantity of the charge q is small enough that it does not perturb the field set up by the metal plates. The time that the charge q takes to reach the right plate is proportional to
The charge is at rest at t= 0, when a voltage +V is applied to the plate at —d and voltage —V is applied to the plate at x= +d. Assume that the quantity of the charge q is small enough that it does not perturb the field set up by the metal plates. The time that the charge q takes to reach the right plate is proportional to
Question 4
If 
then the value of div curl 
at (1, -1, 1) is _________.
then the value of div curl at (1, -1, 1) is _________. Question 5
Faraday’s law of electromagnetic induction is mathematically described by which one of the following equations?
Question 6
Light from free space is incident at an angle 0, to the normal of the facet of a step-index large core optical fibre. The core and cladding refractive indices are n1 =1.5 and n2 = 1.4, respectively.
The maximum value of
(in degrees) for which the incident light will be guided in the core of the fibre is ______
The maximum value of
(in degrees) for which the incident light will be guided in the core of the fibre is ______Question 7
To maximize power transfer, a lossless transmission line is to be matched to a resistive load impedance via a 
transformer as shown.
The characteristic impedance (in
) of the 
transformer is _________.
transformer as shown. The characteristic impedance (in
) of the transformer is _________. Question 8
For a rectangular waveguide of internal dimensions a × b(a > b) , the cut-off frequency for the 
mode is the arithmetic mean of the cut-off frequencies for 
mode and 
mode. If 
the value of b (in cm) is _____.
mode is the arithmetic mean of the cut-off frequencies for mode and mode. If the value of b (in cm) is _____. Question 9
Which one of the following field patterns represents a TEM wave travelling in the positive x direction?
Question 10
The lowest frequency at which a uniform plane wave incident from region 1 onto the boundary at z=0 will have no reflection, is
Region 1 (z<0);
Region 2 (0<z,6cm);
Region 1 (z>6cm);
Region 1 (z<0);
Region 2 (0<z,6cm);
Region 1 (z>6cm);
- 291 attempts
- 8 upvotes
- 4 comments
Dec 27ESE & GATE EC
