To prevent a DC return between source and load, it is necessary to use___________?

Related Mcqs:

1. A dc power supply has no-load voltage of 30v,and a full-load voltage of 25v at full-load current of 1A.Its output resistance & load regulation ,respectively are_____________?

   A. 5 Ω & 20 %
   B. 25 Ω & 20 %
   C. 5 Ω & 16.7 %
   D. 25 Ω & 16.7 %

2. The encapsulation of transistor is necessary for__________?

   A. preventing radio interference
   B. preventing photo-emission effects
   C. avoiding loss of free electrons
   D. mechanical ruggedness

3. A source follower using an FET usually has a voltage gain which is___________?

   A. greater than +100
   B. slightly less than unity but positive
   C. exactly unity but negative
   D. about -10

4. An n- channel JFET has IDSS=2mA,and Vp=-4v.Its transconductance gm=in mA/V)for an applied gate to source voltage VGS=-2v is___________?

   A. 0.25
   B. 0.5
   C. 0.75
   D. 1

5. In a full-wave rectifier using two ideal diodes,Vdc & Vm are the dc & peak values of the voltage respectively across a resistive load. If PIV is the peak inverse voltage of the diode, then the appropriate relationships for this rectifier is____________?

   A. Vdc = Vm/π, PIV=2Vm
   B. Vdc = 2Vm/π, PIV=2vm
   C. Vdc = 2Vm/π, PIV=Vm
   D. Vdc = Vm/π, PIV=Vm

6. The horizontal intercept of dc load line is the same as ideal____________?

   A. cut off point
   B. saturation point
   C. operating point
   D. quasi saturation point

7. The bandwidth of an RF tuned amplifier is dependent on____________?

   A. Q –factor of the tuned o/p circuit
   B. Q –factor of the tuned i/p circuit
   C. Quiescent operating point
   D. Q-factor of the o/p and i/p circuits as well as quiescent operating point

8. Most of the linear ICs are based on the two-transistor differential amplifier because of its___________?

   A. input voltage dependent linear transfer characteristic
   B. high voltage gain
   C. high input resistance
   D. high CMRR

9. Three identical amplifiers with each one having a voltage gain of 50,input resistance of 1KΩ & output resistance of 250 ,are cascaded.The open circuit voltage gain of combined amplifier is_________?

   A. 49dB
   B. 51dB
   C. 98dB
   D. 102dB

10. The early effect in a bipolar junction transistor is caused by_______________?

    A. fast turn-on
    B. fast turn-off
    C. large collector-base reverse bias
    D. large emitter-base forward bias