Materials in order of decreasing electrical conductivity are

A)
silver, copper, gold, aluminium
B)
gold, silver, copper, aluminium
C)
copper, silver, gold, aluminium
D)
aluminium, silver, gold, copper

Correct Answer : Option (A) :   silver, copper, gold, aluminium

Recently Updated in Electronic Devices and Circuits Questions
The kinetic energy of photoelectrons emitted by a photo sensitive surface depends on
A)
angle of incidence of radiation
B)
surface conditions of the surface
C)
intensity of the incident radiation
D)
wavelength of the incident radiation

Correct Answer :   wavelength of the incident radiation

For radiating ultraviolet rays, LEDs use
A)
gallium arsenide
B)
zinc sulphide
C)
gallium phosphide
D)
None of the above

Correct Answer :   zinc sulphide

For an P-N-P transistor in normal operation its junction are biased as
A)
emitter base : reverse, collector base : reverse
B)
emitter base : reverse, collector base : forward
C)
emitter base : forward, collector base : forward
D)
emitter base : forward, collector base : reverse

Correct Answer :   emitter base : forward, collector base : reverse

ECE MCQ's

Power Electronics
Digital Electronics
Analog Electronics
Microprocessors
Radio Receivers
Signals and Systems
Satellite Communication
Communication Systems
Microwave Communication
Automatic Control Systems
Materials and Components
More
Quick Links
Interview Questions
S/W Technology
Civil,   Mech
ECE,   EEE
More Technologies
MCQ (or) Quiz
S/W Technology
Civil,   Mech
ECE,   EEE
Aeronautical
Example Programs
C Language,   C++,   Java,   PHP,   Python
Articles
Marketing Management
Tech Updates
Tech Articles
Tools
Color Picker
Interest Calculator
EMI Calculator
Vehicle EMI Calculator
Compailers
HTML
C & CPP
PHP
Python