A. The switch
B. The light emitting diode
C. The photo diodes
D. Solar cells.
Related Mcqs:
- The specially designed semi-conductor diodes used as fast counters in electronic circuits are______________?
A. The light emitting diodes
B. Photo diodes
C. Photo voltaic cell
D. Solar cells. - The specially designed semi-conductor diodes used as fast counters in electronic circuits are_______________?
A. The light emitting diodes
B. Photo diodes
C. Photo voltaic cell
D. Solar cells. - The electronic circuits which implement the various logic operations are called_____________?
A. Logic gates
B. Boolean algebra
C. Amplifier gain
D. Logic functions - Non-inverting amplifier circuits have____________?
A. A very high input impedance
B. A very low input impedance
C. A low output impedance
D. None of the above - The semiconductor diode can be used as a rectifier because _______________?
A. It has low resistance to the current flow when forward biased & high resistance when reverse biased.
B. It has low resistance to the current flow when forward biased.
C. It has high resistance to the current flow when reverse biased
D. Its conductivity increases with rise of temperature. - To obtain an n-type semiconductor germanium crystal it must be doped with foreign atoms whose valency is_____________?
A. 2
B. 3
C. 4
D. 5 - In an electronic transition atom cannot emit______________?
A. γ-rays
B. Infra red radiation
C. Visible light
D. Ultraviolet rays - Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains ?
A. 40 W bulb
B. 60 W blub
C. 100 W blub
D. all will burn equally brightly - Acceptor and donor impurities donate______________?
A. n-carriers only
B. p-carriers only
C. p-carriers and n-carriers respectively
D. n-carriers and p-carriers respectively - In the transistor schematic symbol, the arrow______________?
A. is located on the emitter
B. is located on the base
C. is locate on the collector
D. points form north to south
