Micro Electronics

11. An IC op-amp that combines FETs and bipolar transistors.

  1. BIFET
  2. MOSFET
  3. CMOS
  4. IGFET

Correct answer: (A)
BIFET

12. An integrated circuit for both astable and monostable applications

  1. 741 op-amp
  2. Discrete ICs
  3. Monolithic ICs
  4. 555 timer

Correct answer: (D)
555 timer

13. An integrator op-amp uses what element in the feedback path?

  1. Capacitor
  2. Resistor
  3. Inductor
  4. Transistor

Correct answer: (A)
Capacitor

14. An op-amp circuit that has its output tied directly to the inverting input terminal is called a __________

  1. Current follower
  2. Inverting amplifier
  3. Non-inverting amplifier
  4. Voltage follower

Correct answer: (D)
Voltage follower

15. An oscillator is described by

  1. Regenerative feedback
  2. No feedback
  3. An integrator or differentiator
  4. Unity gain and zero phase shift around the feedback loop

Correct answer: (D)
Unity gain and zero phase shift around the feedback loop

16. Astable multivibrator is

  1. A square wave clock
  2. Equivalent to a flip-flop
  3. A one-shot multivibrator
  4. Monostable in nature

Correct answer: (A)
A square wave clock

17. CMRR means

  1. Common-mode rejection ratio
  2. The ratio of the differential voltage gain to common-mode voltage gain
  3. Both a and b
  4. The difference between the two base voltages

Correct answer: (C)
Both a and b

18. Considered as the fundamental form of IC

  1. Hybrid
  2. MSI
  3. VLSI
  4. Monolithic

Correct answer: (D)
Monolithic

19. Dual-in-line pick up (DIP) is the most popular IC package because

  1. It is low in cost
  2. It is one of the tiniest package known
  3. It ruggedly resist vibration due to its solid construction
  4. All of the above

Correct answer: (D)
All of the above

20. For a constant input voltage to an integrator, why is the voltage across the capacitor linear?

  1. Capacitor diode does not dissipate heat
  2. Capacitor current is constantly changing
  3. Capacitor current is linear
  4. Capacitor current is constant

Correct answer: (D)
Capacitor current is constant

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