A. temperature
B. resistance
C. eddy currents
D. coupling co-efficient
Related Mcqs:
- In thermocouples which of the following pairs is commonly used ?
A. Copper-constantan
B. Aluminium-tin
C. Silver-German silver
D. Iron-steel - Overhead telephone wires are made of_____________?
A. aluminium
B. steel
C. ACSR conductors
D. copper - The minority carrier concentration is largely a function of_____________?
A. forward biasing voltage
B. reverse biasing voltage
C. temperature
D. the amount of doping - 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 - For germanium the forbidden energy gap is_______________?
A. 0.15 eV
B. 0.25 eV
C. 0.5eV
D. 0.7eV