A. insulators
B. conductors
C. semiconductors
D. superconductors
Related Mcqs:
- The metal having the lowest temperature coefficient of resistance is_________________?
A. gold
B. copper
C. aluminium
D. kanthal - Which of the following resistive materials has the lowest temperature co-efficient of resistance ?
A. Nichrome
B. Constantan
C. Kanthal
D. Molybdenum - Which of the following high resistance materials has the highest operating temperature ?
A. Kanthal
B. Manganin
C. Nichrome
D. Eureka - is an element used in semiconductors whose atoms have three valence electrons?
A. An acceptor
B. A donor
C. Germanium
D. Silicon - If the resistance of a conductor does not vary in accordance with Ohm’s law it is known as____________?
A. non-linear conductor
B. reverse conductor
C. bad-conductor
D. non-conductor - Surface resistance of an insulating material is reduced due to the______________?
A. smoky and dirty atmosphere
B. humidity in the atmosphere
C. both (A) and (b)
D. neither (A) nor (b) - Low resistivity materials are used in__________?
A. transformer, motor and generator windings
B. transmission and distribution lines
C. house wiring
D. all above applications - At transition temperature the value of critical field is____________?
A. zero
B. negative real value
C. positive real value
D. complex value - The transition temperature of mercury is____________?
A. 18.0°K
B. 9.22°K
C. 4.12°K
D. 1.14’K - 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
