ATT test 7 Questions with 100% Correct
Answers
Name the 3 multivibrators whose purpose is to convert DC Energy to square wave energy. - Answer-1.
Astable Multivibrator
2. Monostable Multivibrator
3. Bistable Multivibrator
Converts DC operating voltage to square wave - Answer-Multivibrator
What type of blocking oscillator is a monostable Multivibrator? - Answer-Trigger
How is the output frequency determined in a bistable Multivibrator? - Answer-The output frequency is
one half the input trigger frequency.
What is the purpose of a Schmitt trigger? - Answer-To convert any input waveform of any shape and
amplitude into square wave pulses of constant amplitude.
In a Schmitt Trigger when is output high; when is output low? - Answer-The output is high anytime the
input exceeds the threshold.
, The output is low anytime the input signal is below the threshold.
The action of converting detected intelligence into sound waves that a human can hear. - Answer-
Reproduction
The action of separating the low frequency intelligence from the high frequency carrier. - Answer-
Detection
The ability of the receiver to isolate one station's frequency from the many frequencies present at the
antenna. - Answer-Selection
Occurs when a transmitted electromagnetic wave passes through the receiver's antenna. - Answer-
Reception
What are AM receivers? What does the AM broadcast band cover? - Answer-AM receivers are
electronic devices that pick up signals sent from AM transmitters.
Frequencies go from 535 KHz to 1605 KHz
What is Amplitude Modulation? - Answer-Occurs when the carrier frequency is altered in the amplitude
by the lower intelligence frequency.
How many circuits do the turner block contain? What does each one do? - Answer-Tuner contains 3
circuits.
(RF Amplifier- selects and amplifies one frequency from the many picked up by the antenna.
Local Oscillator- produces a frequency 455 KHz above the selected RF.
Mixer- produces four frequencies)
What is LO, RF, LO+RF, and LO-RF? - Answer-LO Frequency- 455 KHz
Answers
Name the 3 multivibrators whose purpose is to convert DC Energy to square wave energy. - Answer-1.
Astable Multivibrator
2. Monostable Multivibrator
3. Bistable Multivibrator
Converts DC operating voltage to square wave - Answer-Multivibrator
What type of blocking oscillator is a monostable Multivibrator? - Answer-Trigger
How is the output frequency determined in a bistable Multivibrator? - Answer-The output frequency is
one half the input trigger frequency.
What is the purpose of a Schmitt trigger? - Answer-To convert any input waveform of any shape and
amplitude into square wave pulses of constant amplitude.
In a Schmitt Trigger when is output high; when is output low? - Answer-The output is high anytime the
input exceeds the threshold.
, The output is low anytime the input signal is below the threshold.
The action of converting detected intelligence into sound waves that a human can hear. - Answer-
Reproduction
The action of separating the low frequency intelligence from the high frequency carrier. - Answer-
Detection
The ability of the receiver to isolate one station's frequency from the many frequencies present at the
antenna. - Answer-Selection
Occurs when a transmitted electromagnetic wave passes through the receiver's antenna. - Answer-
Reception
What are AM receivers? What does the AM broadcast band cover? - Answer-AM receivers are
electronic devices that pick up signals sent from AM transmitters.
Frequencies go from 535 KHz to 1605 KHz
What is Amplitude Modulation? - Answer-Occurs when the carrier frequency is altered in the amplitude
by the lower intelligence frequency.
How many circuits do the turner block contain? What does each one do? - Answer-Tuner contains 3
circuits.
(RF Amplifier- selects and amplifies one frequency from the many picked up by the antenna.
Local Oscillator- produces a frequency 455 KHz above the selected RF.
Mixer- produces four frequencies)
What is LO, RF, LO+RF, and LO-RF? - Answer-LO Frequency- 455 KHz
