Engineering Mathematics

Calculate the noise figure of the amplifier whose Req equals 2518 ohms (R sub T = 600 ohms) if it's driven by a generator whose output impedance is 50 ohms.
39.4
394
0.394
3.94
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Question:
Calculate the noise figure of the amplifier whose Req equals 2518 ohms (R sub T = 600 ohms) if it's driven by a generator whose output impedance is 50 ohms.
Answer:

39.4

What is a wavefront?
A voltage pulse across a resistor
A current in a conductor
A fixed point in an electromagnetic wave
A voltage pulse in a conductor
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Question:
What is a wavefront?
Answer:

A fixed point in an electromagnetic wave

In a feedback control system, what is the purpose of a PID controller?
Reducing signal delay
Providing proportional, integral, and derivative control
Controlling system temperature
Regulating power output
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Question:
In a feedback control system, what is the purpose of a PID controller?
Answer:

Providing proportional, integral, and derivative control

Explanation:

A PID (Proportional-Integral-Derivative) controller adjusts the system output based on proportional, integral, and derivative components, enhancing control performance and reducing error over time.

Different grouping of the electromagnetic spectrum.
Bandwidth
Group
Band
Channel
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Question:
Different grouping of the electromagnetic spectrum.
Answer:

Band

a>0 if and only if _____