MCQ 11 Mark
The equivalent number of decimal number 27 into binary number system will be :
- A$ (10011)_{2} $
- B$ (10111)_{2} $
- C$ (11001)_{2} $
- ✓$ (11011)_{2} $
Answer
View full question & answer→Correct option: D.
$ (11011)_{2} $
D
Questions
M.C.Q (1 Marks)
Take a timed test
28 questions · 27 auto-graded MCQ + 1 self-marked written.
MCQ 21 Mark
P-N junction diode is used as :
- Aan amplifier
- Ban oscillator
- Ca modulator
- ✓a rectifier
Answer
View full question & answer→Correct option: D.
a rectifier
D
MCQ 31 Mark
If in a logic gate output (Y) is obtained by the product of its both inputs (A, B) then the gate is :
- ✓AND
- BOR
- CNOR
- DNOT
Answer
View full question & answer→Correct option: A.
AND
A
MCQ 41 Mark
Instrument used to increase input voltage/current is called :
- Aoscillator
- ✓amplifier
- Cdiode
- Drectifier
Answer
View full question & answer→Correct option: B.
amplifier
B
MCQ 51 Mark
The width of forbidden energy gap in the semiconductor is approximately :
- ✓1 eV
- B10 eV
- C100 eV
- D0.01 eV
Answer
View full question & answer→Correct option: A.
1 eV
A
MCQ 61 Mark
Fundamental gates are :
- ✓AND, OR, NOT
- BNAND, NOR
- COR, NOT
- DAND,OR
Answer
View full question & answer→Correct option: A.
AND, OR, NOT
A
MCQ 71 Mark
With rise in temperature resistivity of an intrinsic semiconductor :
- Aincreases
- ✓decreases
- Cremains constant
- Dnone of these
Answer
View full question & answer→Correct option: B.
decreases
B
MCQ 81 Mark
If the corrent constant for a transistor are $ \alpha $ & $ \beta $, then :
- A$ \alpha \beta = 1 $
- ✓$ \beta > 1, \alpha < 1 $
- C$ \alpha = \beta $
- D$ \beta < 1, \alpha > 1 $
Answer
View full question & answer→Correct option: B.
$ \beta > 1, \alpha < 1 $
B
MCQ 91 Mark
A semiconductor is cooled from $ T_{1} K $ to $ T_{2} K $, then its resistance will :
- ✓Increase
- BDecrease
- CRemain Fixed
- DFirst decrease then increase
Answer
View full question & answer→Correct option: A.
Increase
A
MCQ 101 Mark
Boolean expression for NAND gate is :
- A$ A + B = Y $
- B$ \overline{A + B} = Y $
- ✓$ \overline{A \cdot B} = Y $
- D$ A \cdot B = Y $
Answer
View full question & answer→Correct option: C.
$ \overline{A \cdot B} = Y $
C
MCQ 111 Mark
For $n$-type Germanium impurity dopped in Germanium is :
- ATrivalent
- BTetravalent
- ✓Pentravalent
- DNone of these
Answer
View full question & answer→Correct option: C.
Pentravalent
C
MCQ 121 Mark
Diode is used as :
- AAn amplifier
- BAn oscillator
- CA modulator
- ✓A rectifier
Answer
View full question & answer→Correct option: D.
A rectifier
D
MCQ 131 Mark
The majority current carrier in $p$-type semi-conductor is :
- Aelectron
- ✓hole
- Cphoton
- Dproton
Answer
View full question & answer→Correct option: B.
hole
B
MCQ 141 Mark
With the increase of temperature, the resistance of a semi-conductor :
- Aincreases
- ✓decreases
- Csometimes increases and sometimes decreases
- Dremains unchanged
Answer
View full question & answer→Correct option: B.
decreases
B
MCQ 151 Mark
The Boolean expression for NOR gate, is :
- A$ \overline{A \cdot B} = Y $
- B$ A + B = Y $
- C$ A \cdot B = Y $
- ✓$ \overline{A + B} = Y $
Answer
View full question & answer→Correct option: D.
$ \overline{A + B} = Y $
D
MCQ 161 Mark
Binary of decimal number 25 is :
- A$ (1100)_{2} $
- B$ (1001)_{2} $
- ✓$ (11001)_{2} $
- D$ (11101)_{2} $
Answer
View full question & answer→Correct option: C.
$ (11001)_{2} $
C
MCQ 171 Mark
- AOR
- BNOR
- CNAND
- ✓AND
Answer
View full question & answer→Correct option: D.
AND
D
MCQ 181 Mark
Which of the following is not according to addition law of binary digits ?
- ✓0 + 0 = 0
- B0 + 1 = 1
- C1 + 0 = 1
- D1 + 1 = 1
Answer
View full question & answer→Correct option: A.
0 + 0 = 0
A
MCQ 191 Mark
The sum of binary numbers 1011 and 110 is :
- ✓10001
- B10011
- C11011
- D11101
Answer
View full question & answer→Correct option: A.
10001
A
MCQ 201 Mark
The output of OR gate of two input terminals will be zero only when :
- ✓Any one of inputs is 1
- BBoth inputs are 1
- CAny one of inputs is zero
- DBoth inputs are zero
Answer
View full question & answer→Correct option: A.
Any one of inputs is 1
A
MCQ 211 Mark
In combination of gates shown in adjacent figure, to get output Y = 1 which of the following is correct?
- ✓A=1, B=0, C=1
- BA=1, B=1, C=0
- CA=0, B=1, C=0
- DA=1, B=0, C=0
Answer
View full question & answer→Correct option: A.
A=1, B=0, C=1
A
Question 221 Mark
Answer
View full question & answer→A
MCQ 231 Mark
At absolute zero temperature a crystal of pure germanium behaves as :
- Aa perfect conductor
- ✓a perfect insulator
- Ca semiconductor
- Dnone of these
Answer
View full question & answer→Correct option: B.
a perfect insulator
B
MCQ 241 Mark
To make silicon as $n$-type semiconductor the impurity to be dopped in it is :
- AAl
- BFe
- CB
- ✓Sb
Answer
View full question & answer→Correct option: D.
Sb
D
MCQ 251 Mark
Energy Bands of three substances are shown in the following figures, where V is valance band and C is conduction band.
These substances respectively are :
These substances respectively are :
- Aconductor, semiconductor, insulator
- Bsemiconductor, insulator, conductor
- Cinsulator, conductor, semiconductor
- ✓semiconductor, conductor, insulator
Answer
View full question & answer→Correct option: D.
semiconductor, conductor, insulator
D
MCQ 261 Mark
The impurity to be dopped in pure germanium so as to make it $p$-type semiconductor is :
- Aphosphorous
- Bantimony
- ✓aluminium
- Darsenic
Answer
View full question & answer→Correct option: C.
aluminium
C
MCQ 271 Mark
Holes charge carries :
- AIn $p$-type semiconductor only
- BIn $n$-type semiconductor only
- ✓In intrinsic and $p$-type semiconductor
- DIn intrinsic semiconductor only
Answer
View full question & answer→Correct option: C.
In intrinsic and $p$-type semiconductor
C
MCQ 281 Mark
When Silicon is dopped with Boron as an impurity the resulting substance is :
- A$n$-type semiconductor
- ✓$p$-type semiconductor
- C$n$-type conductor
- D$p$-type conductor
Answer
View full question & answer→Correct option: B.
$p$-type semiconductor
B