AET NCATT Questions with CORRECT Answers
Question:
Negative Temperature coefficient: As temperature increases, resistance.....
Answer:
Decreases
Question:
Using a swamping resister for thermal stability, what type of feedback is developed to
control the amplifier?
Answer:
Degenerative
Question:
What dissipates heat into the air?
Answer:
Heatsink
Question:
What amplifier coupling can amplify DC voltages as well as AC signals?
Answer:
Direct Coupler
Question:
In a common collector amp, degenerative feedback is how many degrees out of phase
with the input signal?
Answer:
180
Question:
The common base amplifier has a voltage gain than one, but the current gain than one
Answer:
Greater. Less.
,Question:
Sinusoidal Oscillator produces what waveform?
Answer:
Sine
Question:
Requirements for sustaining oscillations in an oscillator
Answer:
Power supply, FDD, Amplifier, Regenerative Feedback
Question:
What determines width output pulses in a bistable multivibrator?
Answer:
PRT of the input triggers
Question:
What type of output wave is created by an astable multivibrator?
Answer:
square wave or rectangle wave
Question:
Astable multivibrator is a what type of oscillator
Answer:
Free running oscillator
Question:
Transistor amplifier operating in class B, collector current will flow of the input signal?
Answer:
180 or 50%
Question:
Class A amplifier
Answer:
360 or 100%
, Question:
Class C amplifier
Answer:
90 degrees or less than 50%
Question:
Class AB amplifier
Answer:
More than 180%, less than 360 degrees
Question:
What type of amplifier coupling is used for impedence matching and circuit isolation?
Answer:
Transformer
Question:
The interchange of energy between the inductor and capacitor in a tank circuit is called
Answer:
Flywheel effect
Question:
what is resistance of normally closed contacts when the relay is de-energized
Answer:
0 or short
Question:
What distinguishes a solenoid from a basic relay?
Answer:
Plunger is pulled into the coil
Question:
What part of a basic relay returns the armature to its de-energized position
Answer:
Spring
Question:
Negative Temperature coefficient: As temperature increases, resistance.....
Answer:
Decreases
Question:
Using a swamping resister for thermal stability, what type of feedback is developed to
control the amplifier?
Answer:
Degenerative
Question:
What dissipates heat into the air?
Answer:
Heatsink
Question:
What amplifier coupling can amplify DC voltages as well as AC signals?
Answer:
Direct Coupler
Question:
In a common collector amp, degenerative feedback is how many degrees out of phase
with the input signal?
Answer:
180
Question:
The common base amplifier has a voltage gain than one, but the current gain than one
Answer:
Greater. Less.
,Question:
Sinusoidal Oscillator produces what waveform?
Answer:
Sine
Question:
Requirements for sustaining oscillations in an oscillator
Answer:
Power supply, FDD, Amplifier, Regenerative Feedback
Question:
What determines width output pulses in a bistable multivibrator?
Answer:
PRT of the input triggers
Question:
What type of output wave is created by an astable multivibrator?
Answer:
square wave or rectangle wave
Question:
Astable multivibrator is a what type of oscillator
Answer:
Free running oscillator
Question:
Transistor amplifier operating in class B, collector current will flow of the input signal?
Answer:
180 or 50%
Question:
Class A amplifier
Answer:
360 or 100%
, Question:
Class C amplifier
Answer:
90 degrees or less than 50%
Question:
Class AB amplifier
Answer:
More than 180%, less than 360 degrees
Question:
What type of amplifier coupling is used for impedence matching and circuit isolation?
Answer:
Transformer
Question:
The interchange of energy between the inductor and capacitor in a tank circuit is called
Answer:
Flywheel effect
Question:
what is resistance of normally closed contacts when the relay is de-energized
Answer:
0 or short
Question:
What distinguishes a solenoid from a basic relay?
Answer:
Plunger is pulled into the coil
Question:
What part of a basic relay returns the armature to its de-energized position
Answer:
Spring
