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GATE 2024 Subject Name Foundation Quiz 82
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Question 1
When the optical power incident on a photodiode is 10 µW and the responsivity is 0.8 A/W, the photocurrent generated (in µA) is ____
Question 2
Match items in Group 1 with item in Group 2, most suitable.
Group 1
P- LED
Q- Avalanche photodiode
R- Tunnel diode
S- LASER
Group 2
1- Heavy doping
2- Coherent radiation
3- Spontaneous emission
4- Current gain
Group 1
P- LED
Q- Avalanche photodiode
R- Tunnel diode
S- LASER
Group 2
1- Heavy doping
2- Coherent radiation
3- Spontaneous emission
4- Current gain
Question 3
If P is Passivation, Q is n–well implant, R is metallization and S is source/drain diffusion, then the order in which they are carried out in a standard n–well CMOS fabrication process, is
Question 4
A particular green LED emits light of wavelength 5490oA. The energy band gap of the semiconductor material used there is (Planck’s constant = 6.625x10-34 J-s.)
Question 5
In the Zener diode voltage regulator circuit shown in the figure below, the Zener diode has the following parameter
VZ =6V, RZ = 0Ω
The value of output voltage Vo for the load resistance, R = 50Ω is_____
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