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IMPORTANT
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A carrier wave of peak voltage 12V is used to transmit a message signal. The peak voltage of the modulating signal in order to have a modulation index of 75% is 3N volt then N is ?

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Important Questions on Electronic Devices Semiconductors

EASY
JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 43
Degree of modulation –
EASY
JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 44
In amplitude modulation -
EASY
JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 45
The Amplitude Modulated wave contains three frequencies, viz :
EASY
JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 46
The UHF band of radio waves is used for transmission in
EASY
JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 47
For sky wave propagation, the radio waves must have a frequency range in between:
EASY
JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 48
Television signals along the line of sight on earth cannot be received at distances greater than 100 km from the transmission station. The reason behind this is that
EASY
JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 49
What determines the absorption of radio waves by the atmosphere?
HARD
JEE Main
IMPORTANT
Physics Crash Course JEE Main>Chapter 22 - Electronic Devices Semiconductors>Level 1>Q 50
1% of 1012 Hz of a satellite link was used for telephony. The number of channels or subscribers if each channel is of 8 kHz are