An ideal OP-AMP is an ideal___________?

Related Mcqs:

1. 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

2. Which of the following is not associated with a p-n junction?

   A. junction capacitance
   B. charge storage capacitance
   C. depletion capacitance
   D. channel length modulation

3. A change in the value of the emitter resistance Re in a differential amplifier?

   A. affects the difference mode gain Ad
   B. affects the common mode gain Ac
   C.affects both Ad and Ac
   D. does not effect either Ad and Ac

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

   A. resistor between source and load
   B. inductor between source and load
   C. capacitor between source and load
   D. either A. or B.

5. In a transistor leakage current mainly depends on__________?

   A. doping of base
   B. size of emitter
   C. rating of transistor
   D. temperature

6. 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

7. The action of JFET in its equivalent circuit can best be represented as a_____________?

   A. Current controlled Current source
   B. Current controlled voltage source
   C. Voltage controlled voltage source
   D. voltage controlled current source

8. Which of the following amplifier circuit using junction transistor has the best gain?

   A. Common base
   B. Common emitter
   C. Common collector
   D. All have the same gain

9. MOSFET can be used as a__________?

   A. current controlled capacitor
   B. voltage controlled capacitor
   C. current controlled inductor
   D. voltage controlled inductors

10. An amplifier using an opamp with slew rate SR=1v/µsec has a gain of 40db.if this amplifier has to faithfully amplify sinusoidal signals from dc to 20 KHz without introducing any slew-rate induced distortion, then the input signal level must not exceed________?

    A. 795mV
    B. 395mV
    C. 795 mV
    D. 39.5mV