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Electronics and Communication Engineering - Materials and Components

Exercise : Materials and Components - Section 8
26.
The unit for mmf is
A
Wb
T
V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
A magnetic field exists around
moving charges
static charges
iron
copper
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
A conductor carries 10 A current in + x direction and is lying in a field having a flux density 0.2 T directed along + z direction. The magnitude of force per metre length and direction are
2 N, + y direction
2 N, - y direction
0.02 N, + y direction
0.02 N, - y direction
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The residual resistivity of a binary alloy at 0 K is
sum of residual resistivities of component metals
difference of residual resistivities of component metals
product of residual resistivities of component metals
dependent on the concentration of minor component in the alloy
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
The resistance of a photoconductor
increases with increase in light intensity
decreases with increase in light intensity
may increase or decrease with increase in light intensity
remains constant
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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