Please help me For Amplitude Modulation, if the carrier power of an AMtransmitter is 800 W and it is modulation depth 50 percent, then thetotal power is equal to850 W900 W750 W1000.8 WWhen AM signal is of 5 KHz, calculate the number of channelsrequired in Medium Frequency (MF) band of 530 KHz-1700 KHz.12797117107 8:12 PMAfter passing the FM signal through mixer, what is the change in thefrequency deviation Af if the modulating frequency is doubled?Becomes Af2Remains unchangedBecomes 2 AfBecomes Af /2FM signal is better than AM signal becausea. high immune to noiseb. Less adjacent channelinterferencec. Amplitude limiters are used toavoid amplitude variationsd. All of the abovee. Both a and b only.

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For Amplitude Modulation, if the carrier power of an AM transmitter is 800 W and it is modulation depth 50 percent, then the total power is equal to 850 W 900 W 750 W 1000.8 W

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

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Concept explainers

Thermistors

A thermistor is a special type of resistor whose resistance is more temperature-dependent than standard resistors. The resistance of the thermistor decreases with increasing temperature. This is the basic principle of thermistors. This allows the thermistor circuit to detect very small temperature changes that cannot be observed with the Resistance temperature detectors (RTDs) or the thermocouples. Since the resistance of a thermistor is temperature dependent, it can be connected to an electrical circuit to measure body temperature. This high sensitivity to temperature changes makes thermistors very useful for accurately controlling and calibrating temperature measurements. In general, resistance increases with increasing temperature in most metals, but thermistors react negatively.

Question

Please help me

For Amplitude Modulation, if the carrier power of an AM
transmitter is 800 W and it is modulation depth 50 percent, then the
total power is equal to
850 W
900 W
750 W
1000.8 W
When AM signal is of 5 KHz, calculate the number of channels
required in Medium Frequency (MF) band of 530 KHz-1700 KHz.
127
97
117
107

8:12 PM
After passing the FM signal through mixer, what is the change in the
frequency deviation Af if the modulating frequency is doubled?
Becomes Af2
Remains unchanged
Becomes 2 Af
Becomes Af /2
FM signal is better than AM signal because
a. high immune to noise
b. Less adjacent channel
interference
c. Amplitude limiters are used to
avoid amplitude variations
d. All of the above
e. Both a and b only.

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