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Previous Year JEE Main Questions on Semiconductors
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Question 1
The I–V characteristic of an LED is
Question 2
The current-voltage relation of the diode is given by I = (e1000V/T – 1) mA, where the applied voltage V is in volts and the temperature T is in degree Kelvin. If a student makes an error measuring ± 0.01 V while measuring the current of 5 mA at 300 K. what will be the error in the value of current in mA?
Question 3
For a common emitter configuration, if α and β have their usual meanings, the correct relationship between α and β is:
Question 4
Carbon, silicon and germanium have four valence electrons each. At room temperature which one of the following statements is most appropriate?
Question 5
If a, b, c, d are inputs to a gate and x is its output, then, as per the following time graph, the gate is :
Question 6
The difference in the variation of resistance with temperature in a metal and a semiconductor arises essentially due to the difference in the
Question 7
The forward biased diode connection is :
Question 8
The logic circuit shown below has the input waveforms 
as shown. Pick out the correct output waveform.
Output is :
as shown. Pick out the correct output waveform. Output is :
Question 9
A p–n junction (4) shown in the figure can act as a rectifier. An alternating current source (V) is connected in the circuit.
The current (I) in the resistor (R) can be shown by :
The current (I) in the resistor (R) can be shown by :
Question 10
In a full wave rectifier circuit operating from 50 Hz mains frequency, the fundamental frequency in the ripple would be
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Oct 23JEE & BITSAT
