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AFCAT-EKT EC: Mock Test 1

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Question 1

Which of the following expressions represent intrinsic concentration n_i²?

Question 2

For microwave measurement by measurement of VSWR, which of the following is not true?

Question 3

The equation of the line through the point of intersection of the lines x – y + 4 = 0 and y – 2x – 5 = 0 and passing through the point (3, 2) is -

Question 4

A parallel-plate guide operates in the TEM mode only over the frequency range 0<f<3 GHz If the dielectric between the plates is Teflon (

then maximum allowable plate separation b is: -

Question 5

If an atom loses one or more electrons, it becomes ___________.

Question 6

From a pack of well shuffled cards, one card is drawn randomly. A gambler bets that it is either a diamond or a king. The odds in favour of his winning the bet will be?

Question 7

Y=X² is a zero mean stationary Gaussian random process with auto correlation for

, then find the value of

Question 8

How much increase in actual voltage gain corresponds to + 12 dB?

Question 9

Mean of n numbers given below is

Question 10

If the sum of the first ten terms of the series

m, then m is equal to

Question 11

In the given question, what is the shorted terminal current in the equivalent current source?

Question 12

In any G.P. the first term is 2 and last term is 512 and common ratio is 2, then 5^th term from end is-

Question 13

If receiver has an available power gain of 110 dB and a noise bandwidth of 100 MHz, the available output noise power of receiver is (T= 300 ^oK)

Question 14

Fermi energy level for p-type extrinsic semiconductors lies __________.

Question 15

Let

denote the number of triangles which can be formed using the vertices of a regular polygon of n sides. If

then n equals:

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ESE & GATE EC General

Jun 9ESE & GATE EC