1
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

If the maximum efficiency of a full wave rectifier is $$x \%$$ and that of half-wave rectifier is $$y \%$$, then the relation between $$x$$ and $$y$$ is

A
$$x=y$$
B
$$x=2 y$$
C
$$y=2 x$$
D
$$y=4 x$$
2
MHT CET 2023 13th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Doping of a semiconductor (with small impurity atoms) generally changes the resistivity as follows.

A
Decreases
B
Does not change
C
May increase or decrease depending on the dopant
D
Increase
3
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The following graph represents

MHT CET 2023 13th May Morning Shift Physics - Semiconductor Devices and Logic Gates Question 86 English
A
forward bias characteristics of a solar cell
B
reverse bias characteristics of a Zener diode
C
reverse bias characteristics of a photodiode
D
forward bias characteristics of a LED
4
MHT CET 2023 13th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If two inputs of a NAND gate are shorted, the resulting gate is

A
an OR gate
B
an AND gate
C
a NOT gate
D
a NOR gate
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