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ESE 2021 Technical Quiz || Basics of Semiconductor diodes and transistors and characteristics
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Question 1
The phenomenon known as ‘Early effect’ in a bipolar transistor refers to a reduction of the effective base-width caused by
Question 2
Thermal runaway in a transistor biased in the active region is due to
1) heating of the transistor.
2) change in β due to increase in temperature.
3) change in reverse collector saturation current due to rise in temperature.
4) base emitter voltage VBE which decreases with rise in temperature.
Which of the above statements is/are correct?
Question 3
The majority carriers in an n-type semiconductor have an average drift velocity Vd in a direction perpendicular to a uniform magnetic filed B . The electric filed E induced due to Hall Effect acts in the direction.
Question 4
A reverse voltage of 20 V is applied to a semiconductor diode. The voltage across the depletion layer is_______
Question 5
Which one is the set of properties of a LASER?
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Jul 3ESE & GATE EE