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LMRC 2018 JE EC Exam: Tech Quiz 2

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Question 1

A semiconductor sample at room temperature has intrinsic concentration of 2.5 X 10¹⁷ /m³. After doping what will be the minority carrier concentration if the majority carrier concentration is given as 5.5 X 10²¹ /m³.

Question 2

The binary representation of 77/16 is

Question 3

A 8cm x 4 cm guide is made of a material with σ=0, The propagation constant for

and mode at

Question 4

Frequency of an local oscillator in a AM standard broadcast receiver having on IF as 455kHz and tuned in 540kHz when local oscillator tracks above the frequency of received signal is

Question 5

For a two port network to be reciprocal, which of the following conditions must be satisfied?

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ESE & GATE EC General

Nov 5ESE & GATE EC