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1
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A zener diode, having breakdown voltage 15 V is used in a voltage regulator circuit as shown. The current through the zener diode is

MHT CET 2024 4th May Morning Shift Physics - Semiconductor Devices and Logic Gates Question 45 English

A
20 mA
B
5 mA
C
10 mA
D
15 mA
2
MHT CET 2024 4th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A semiconductor device X is connected in series with a battery and a resistor. The current of 10 mA is found to pass through the circuit. If the terminals of X are connected in reverse manner, the current drops to almost zero. X may be

A
a zener diode
B
a p-n junction diode
C
an intrinsic semiconductor
D
an extrinsic semiconductor
3
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

The Boolean expression for ' $x-O R$ ' gate $C=(A \oplus B)$ is equal to

A
$(\mathrm{A} \cdot \mathrm{B})+(\overline{\mathrm{A}} \cdot \overline{\mathrm{B}})$
B
$\mathrm{A}+(\overline{\mathrm{A}} \cdot \overline{\mathrm{B}})$
C
$(\mathrm{A} \cdot \mathrm{B})+\overline{\mathrm{B}}$
D
$(\overline{\mathrm{A}} \cdot \mathrm{B})+(\mathrm{A} \cdot \overline{\mathrm{B}})$
4
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which one of the following statements is true? A p-type semiconductor is doped with

A
trivalent impurity and electrons are majority carriers.
B
pentavalent impurity and electrons are minority carriers.
C
pentavalent impurity and holes are minority carriers.
D
trivalent impurity and holes are majority carriers.
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