A. forward biasing voltage
B. reverse biasing voltage
C. temperature
D. the amount of doping
Related Mcqs:
- Overhead telephone wires are made of_____________?
A. aluminium
B. steel
C. ACSR conductors
D. copper - Thermocouples are mainly used for the measurement of_____________?
A. temperature
B. resistance
C. eddy currents
D. coupling co-efficient - The resistivity of a metal is a function of temperature because_____________?
A. the amplitude of vibration of the atoms varies with temperature
B. the electron density varies with temperature
C. the electron gas density varies with temperature - The tiny block formed by the arrangement of a small group of atoms is called the____________?
A. unit cell
B. space lattice
C. either A. or (b)
D. none of the above - The superconductivity is due to____________?
A. the crystal structure having no atomic vibration at 0°K
B. all electrons interact in the super-conducting state
C. the electrons jump into nucleus at 0°K
D. none of the above - Which of the following is the poorest conductor of electricity ?
A. Carbon
B. Steel
C. Silver
D. Aluminium - Thermonic emission occurs in______________?
A. vacuum tubes
B. copper conductors
C. ferrite cores
D. transistors - Due to which of the following factors the brush wear rate is altered ?
A. Speed of the machine
B. Contact pressure
C. Surface conditions of brush and commutator
D. Excessive sparking
E. All of the above - ___________ has the best damping properties?
A. Diamond
B. High speed steel
C. Mild steel
D. Cast iron - is an element used in semiconductors whose atoms have three valence electrons?
A. An acceptor
B. A donor
C. Germanium
D. Silicon
