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6-If the collector resistance is shorted,the ac output voltage will a-Decrease. b-Increase. c-Remain the same. 9 d-Equal zero. 7-If input impedance of the second stage decreases, the voltage gain of the first stage will a-Decrease. b-Increase. c-Remain the same. d-Equal zero. 8-If the load resistance of second stage opens, the voltage gain of the first stage will a-Decrease. b-Increase. c-Remain the same. d-Equal zero. 9-The feedback resistor a-Increases voltage gain. b-Reduces distortion. c-Increases collector resistance. d-Decreases input impedance. 10-when the emitter resistance Rp doubles the ac emitter resistance a-Increases. b-decreases. c-Remains the same. d-Cannot be determined. 11-To reduce the distortion in a CE amplifier, reduce the a-DC emitter current. b-Base-emitter voltage. c-Collector current. d-AC base voltage. 12-The output voltage of a CE amplifier is a-Amplified. b-Inverted. c-180° out of phase with the input. d-All of the above.

1. The following questions refer to the circuit shown below. a) What do the areas of the circuit labeled "., ", and" do? b) Explain the operation of the circuit, beginning on the left (please be specific, do not include the motor or the AC source) c) How would you wire this circuit to a load and a 120VRMS source (note: "N" is Neutral or GND) To Load IL "A" 56R 240R 33RI V1 5v 立三立 120Vrms 160HZ 0° 33nFi ON

Before firing, the voltage across the TRIAC is a. OV b. Once the TRIAC is turned on, it can only be turned off by. a. Removing gate voltage. b. Reducing the current flowing through TRAIC below the holding current value. Both a and b. Approximately Equal to power supply. C.

If a sinusoidal voltage is applied to the base of a biased npn transistor and the resulting sinusoidal collector voltage is cut to near zero volts, what is the state of the transistor? Please select one: a. answers B and C b. interrupted drive c. answers A and C d. forced into nonlinear operation e. drifting into saturation

How are transistors and integrated circuits different from one another?

Give the verilog and testbench code. If a combinational circuit for a BCD to seven-segment code converter that will input a BCD number and output it on a seven segment common- anode display. The code converter will only display the number 8. The converter wil turn the display OFF for all other valid BCD digits except digit 9 which will never occur.

Why transistor is called current controlled device? Can a transistor be used as a amplifier?

11. DIAC and TRIAC are similar in that both devices. a. Can use breakover voltage b. can be used in ac circuits c. are bidirectional d. all of the above   12. These are semiconductor devices that are primarily used in electronics as electronically controlled switches a. Diodes b. Transistors c. Vacuum Tubes d. Thyristors   13. If an SCR is suspected of not functioning properly, it should be tested a. with power off b. with multimeter set to the diode or high resistance function c. With the SCR leads isolated d. All of the above   14. A thyristor that looks like two back-to-back 4 layer diodes is the a. SCR b. Triac c. SCS d. DIAC   15. A device that has an unstable negative resistance region is the a. UJT b. SCS c. TRIAC d. DIAC

3. A programmable unijunction transistor (PUT) is programmed by choosing the a. gate resistors b. RC time constant c. Cathode resistor d. power supply voltage   4. What is the most popular type of Thyristor?  a. DIAC b. TRIAC c. UJT d. SCR   5. For an SCR to turn OFF, the gate has a. To be more negative than the anode b. To be more positive than the cathode c. To be more positive than the anode d. Nothing to do with SCR to turn OFF

How would you reduce Req of a circuit by adding a resistor – numerical piece to follow.

For proper operation of the transistor, its collector should have Select one: a. Very small size b. None of the above c. Proper forward bias d. Proper reverse bias

a) Why is a voltage-controlled current source used to model the 'active' behaviour of any Field Effect Transistor?

4.B. Write, if the shown statements are true or false, (Hint: you will lose points for each incorrect answer. If you mark neither "true" nor "false", your points will not be reduced): a) The device which performance as DC-AC conversion can be used for DC and AC motor as a drive. b) MOSFET switches are suitable for high power application. c) In alternative current circuits, SCR turns off as the current tends to change its polarity (natural commutation). F = d

Transistor Bias Circuits with detailed explanation of Voltage Divider bias(Explain loading effect of voltage divider bias and Thevenin theorem applied to voltage divider bias). Give brief explanation and calculation of other bias methods