A. produce harmonic distortion
B. follows Ohm’s law at low temperatures only
C. result in non-uniform heating
D. none of the above
Related Mcqs:
- Which of the following are non-conductors of electricity?
A. Non-metal solids except carbon
B. Air and most other gases
C. Pure water and liquids in general except mercury
D. All of the above - The conductivity of a conductor can be increased by_______________?
A. decreasing its temperature
B. increasing its temperature
C. decreasing its vibration
D. increasing its vibration - Superconductivity is observed for____________?
A. infrared frequencies
B. d.c. and low frequency
C. a.c. and high frequency
D. frequencies having no effect
E. none of the above - The transition temperature of mercury is____________?
A. 18.0°K
B. 9.22°K
C. 4.12°K
D. 1.14’K - Piezoelectric materials serve as a source of ____________ ?
A. resonant waves
B. musical waves
C. microwaves
D. ultrasonic waves - __________ is a hard solder?
A. Tin-lead
B. Tin-silver-lead
C. Copper-zinc
D. None of the above - Carbon resistors are used extensively because they are____________?
A. easy to make
B. compact
C. inexpensive
D. all of the above reasons - Low resistivity materials are used in__________?
A. transformer, motor and generator windings
B. transmission and distribution lines
C. house wiring
D. all above applications - The conduction of electricity, in semiconductors, takes place due to movement of______________?
A. positive ions only
B. negative ions only
C. positive and negative ions
D. electrons and holes - The conductivity of an extrinsic semiconductor with temperature________________?
A. decreases
B. increases
C. remains constant
