1
WB JEE 2022
MCQ (Single Correct Answer)
+1
-0.25
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A Zener diode having break down voltage Vz = 6V is used in a voltage regulator circuit as shown in the figure. The minimum current required to pass through the Zener to act as a voltage regulator is 10 mA and maximum allowed current through Zener is 40 mA. The maximum value of Rs for Zener to act as a voltage regulator is

WB JEE 2022 Physics - Electronic Devices Question 6 English

A
100 $$\Omega$$
B
400 $$\Omega$$
C
0.4 $$\Omega$$
D
950 $$\Omega$$
2
WB JEE 2022
MCQ (Single Correct Answer)
+1
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The expression $$\overline A (A + B) + (B + AA)(A + \overline B )$$ simplifies to

A
A + B
B
AB
C
$$\overline {A + B} $$
D
$$\overline A + \overline B $$
3
WB JEE 2021
MCQ (Single Correct Answer)
+1
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WB JEE 2021 Physics - Electronic Devices Question 8 English
What is the value of current through the diode in the circuit given?
A
Zero
B
1 mA
C
19 mA
D
9 mA
4
WB JEE 2021
MCQ (Single Correct Answer)
+1
-0.25
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WB JEE 2021 Physics - Electronic Devices Question 7 English
For the given logic circuit, the output Y for inputs (A = 0, B = 1) and (A = 0, B = 0) respectively are
A
0, 0
B
0, 1
C
1, 0
D
1, 1
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