ATT Week 6 Exam| Questins answered 100% Correct, Exams of Electrical Circuit Analysis

Download ATT Week 6 Exam| Questins answered 100% Correct and more Exams Electrical Circuit Analysis in PDF only on Docsity!

ATT Week 6 Exam

The transistor in a multivibrator are biased __________. so that they are either in cutoff or saturation How many transistors do multivibrators have? 2 The purpose of a multivibrator is to _______. convert DC energy to square wave energy When transistors in a multivibrator is on, the output voltage is _________. LOW Triggered multivibrators generate a square wave output only when an external input is applied. In monostable multivibrators, the output of Q2 is fed back through the ________. resistor to the input of Q In multivibrator feedback circuits, how are the transistors connected? Q1 output to Q2 input and Q2 output to Q1 input Multivibrator frequency is determined by ___________. the components in the feedback circuit. In an astable multivibrator, what determines which transistor turns ON when power is first applied?

The transistor that conducts first In an astable multivibrator, with Q1 ON Q2 is turned on by ____________. C1 Charging When Q2 turns ON, Q1 is turned OFF by ________. C2 Discharging In this astable multivibrator, what component is the collector load resistor for Q2? R In this astable multivibrator, what component is the base biasing resistor for Q1? R In this multivibrator, the purpose of R6 is ____________. symmetry control The frequency of this astable multivibrator is ___________. 1.26 kHz In this astable multivibrator, the purpose of C1, C2, R2, R4, and D2 is ____________. External synchronizing. The frequency of this astable multivibrator is ____________. 1.13 kHz In this astable multivibrator, the purpose of R5 is ________. frequency control

In this astable multivibrator, what components determine the frequency of the output square wave? C1, R2 and C2, R What type of feedback circuit do astable multivibrators use? The purpose of an astable multivibrator is to _______. convert DC energy to square wave energy In this astable multivibrator, the purpose of C1, C2, R2, R4, and D2 is _______. external synchronizing In this astable multivibrator, the purpose of D1 and D3 is _____. to ensure sharp rise times. In this circuit, the amount of AVC voltage is Determined by the strength of the incoming ______. IF signal The section of a basic receiver that contains the RF amplifier, local oscillator, and mixer circuits is the ___________. tuner The DC input at the bottom of R5 from the detector is ______. negative AVC voltage Q6 and Q7 are ________ amplifiers. push - pull

When S1 is placed to OPR, if the IF signal strength at the detector decreases, what happens to the base bias voltage on Q Positive bias increases This type of waveform would be the output of the __________. detector In the tuner circuit, this waveform is found at the ________. output of the local oscillator. In the tuner circuit, this waveform, at 455 kHz, is found at the ___________. output of the circuit Between TP4 and TP3, the feedback signal is shifted _______. 180 degrees When an oscillator is first turned on, noise is generated by the ________. resistors In this astable multivibrator, the purpose of R5 is _________. frequency control Astable mutlivibrators are recognized by ________. two cross coupled capacitors an astable multivibrator uses a ____________ operation. free running Monostable multivibrators have ___________ stable state(s).

The purpose of a monostable multivibrator is to __________ convert DC energy to square wave energy What type of feedback circuit