Time Left - 20:00 mins

JEE 2020: Semiconductor Electronics and Communication Quiz 2 (04.10.2019)

Attempt now to get your rank among 448 students!

Question 1

A square wave having amplitude 1V the carrier wave is

, the modulation index

Question 2

An electromagnetic wave of frequency

hertz is propagating along z-axis. The amplitude of electric field is 4 V/m. If

then average energy density of electric field will be :

Question 3

The truth table given in fig. represents

Question 4

A carrier wave of peak voltage 14 V is used for transmitting a message signal. The peak voltage of modulating signal given to achieve a modulation index of 80% will
be :

Question 5

The number of amplitude modulated broadcast stations that can be accommodated in a 300 kHz band width for the highest modulating frequency 15 kHz will be :

Question 6

The reading of the ammeter for a silicon diode in the given circuit is :

Question 7

In the given circuit, the current through zener diode is :

Question 8

For a common emitter configuration, if α and β have their usual meanings, the correct relationship between α and β is:

Question 9

To get an OR gate from a NAND gate, we need

Question 10

Initial LC oscillator frequency is 150Hz and inductance L=3H. If frequency is changed to 180Hz without changing the inductance, find the percentage change in capacitance of the circuit.

448 attempts
1 upvote
11 comments

Tags :

Oct 4JEE & BITSAT