Solid State Devices

21. A large signal amplifier which is biased so that collector current flow continuously during the complete electrical cycle of the signal as well as when no signal is present

1. Class A
2. Class B
3. Class AB
4. Class C

View answer

22. A large signal amplifier which is biased so that current is non zero for less than one-half cycle.

1. Class AB
2. Class C
3. Class A
4. Class B

View answer

23. A lightly doped semiconductor has

1. Low resistance
2. High resistance
3. No effect on a semiconductor
4. More heat dissipated behaviors

View answer

24. A manufacturer quotes in his specifications that a germanium diode conducts 50 mA at 1 volt. Determine the bulk resistance.

1. 100 ohms
2. 60 ohms
3. 14 ohms
4. 20 ohms

View answer

25. A measure of the ability of an LED to produce the desired number of lumens generated per applied watt of electrical energy.

1. Luminous intensity
2. Luminous efficiency
3. Luminous efficacy
4. Luminous ability

View answer

26. A mechanism for carrier motion in semiconductors which occurs when an electric field is applied across a piece of silicon

1. Carrier diffusion
2. Carrier drift
3. Recombination
4. Diffusivity

View answer

27. A method of connecting amplifiers in cascade

1. Configuration
2. Coupling
3. Link
4. Stages

View answer

28. A microwave diode in which the carriers that transverse the drift region are generated by minority carrier injection from a forward-biased junction instead of being extracted from the plasma of an avalanche region.

1. IMPATT
2. TRAPAT
3. BARITT diode
4. Esaki diode

View answer

29. A MOSFET is sometimes called _________ FET

1. Open gate
2. Shorted gate
3. Metallic gate
4. Insulated gate

View answer

30. A multiple-terminal solid-state device similar to a transistor that generates frequencies up to about 10000 MHz by injecting electrons or holes into a space-charge layer which rapidly forces these carriers to a collecting electrode.

1. Magnetron
2. IMPATT
3. Klystron
4. Spacistor

View answer