Test Your Knowledge About Electronics Device
Settings
Let us help each other, fellow ECE reviewees and students. Do not result to such lowly behavior. As they say, a rising tide floats all boats. Lets mind our manners. Respect, engineers. Good for testing your knowledge and mastery on different review materials. Question bank inlcudes Malvino
- 1.
- A.
Zero internal resistance
- B.
Infinite internal resistance
- C.
A load-dependent voltage
- D.
A load-dependent current
- 2.A real voltage source has
- A.
Zero internal resistance
- B.
Infinite internal resistance
- C.
A small internal resistance
- D.
A large internal resistance
- 3.The net charge of a neutral copper atom is
- A.
0
- B.
+1
- C.
- 1
- D.
+4
- 4.At room temperature an intrinsic silicon crystal acts approximately like
- A.
Battery
- B.
Conductor
- C.
Insulator
- D.
Piece of copper wire
- 5.What causes the depletion layer?
- A.
Doping
- B.
Recombination
- C.
Barrier Potential
- D.
Ions
- 6.With a half-wave rectified voltage across the load resistor, load current flows for what part of a cycle?
- A.
0 degrees
- B.
90 degrees
- C.
180 degrees
- D.
360 degrees
- 7.The load voltage is approximately constant when a zener diode is
- A.
Forward-biased
- B.
Reverse-biased
- C.
Operating in the breakdown region
- D.
Unbiased
- 8.For typical operation, you need to use reverse bias with a
- A.
Zener diode
- B.
Photodiode
- C.
Varactor
- D.
All of the above
- 9.. If the depletion layer gets wider, the capacitance
- A.
Decreases
- B.
Stays the same
- C.
Increases
- D.
Is variable
- 10.The currents of a pnp transistor are
- A.
Usually smaller than npn currents
- B.
Opposite npn currents
- C.
Usually larger than npn currents
- D.
Negative
Back to top