⚡Electrical Engineering MCQs
Electrical Engineering MCQs
499 MCQs161
The base resistor method is generally used in ________________?
AAmplifier circuits
BSwitching circuits
CRectifier circuits
DNone of the above
162
In a base resistor method, if the value of ß changes by 50, then collector current will change by a factor ___________________?
A25
B50
C100
D200
163
If the value of collector current IC increases, then the value of VCE ______________?
ARemains the same
BDecreases
CIncreases
DNone of the above
164
In a particular biasing circuit, the value of RE is about _________________?
A10 kO
B1 MO
C100 kO
D800 O
165
The strength of a semiconductor crystal comes from______________?
AForces between nuclei
BForces between protons
CElectron-pair bonds
DNone of the above
166
A semiconductor is formed by ______________bonds?
ACovalent
BElectrovalent
CCo-ordinate
DNone of the above
167
The resistivity of a pure silicon is about _______________?
A100 O cm
B6000 O cm
C3 x 105 O m
D6 x 10-8 O cm
168
When a pentavalent impurity is added to a pure semiconductor, it becomes________________?
AAn insulator
BAn intrinsic semiconductor
Cp-type semiconductor
Dn-type semiconductor
169
An OR gate has 6 inputs. The number of input words in its truth table are________________?
A6
B32
C64
D128
170
Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bit synchronous counter is__________________?
ATTLAS
BCMOS
CECL
DTTLLS