IndiaBIX

Electronics and Communication Engineering - Materials and Components

Exercise : Materials and Components - Section 4
41.
In a virgin specimen of iron, the direction of spontaneous magnetisation varies from domain to domain.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Which of the following is used in lightning arresters?
Thermistor
Photoconductor
Transistor
Varistor
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
High frequency inductors and capacitors are commonly plated with silver. The main purpose of this is to
reduce dc resistance
reduce ac resistance
increase dc resistance
increase ac resistance
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
In its lowest state, the electron is bound to the field of proton by an energy equal to
100.5 eV
51.2 eV
13.6 eV
0.2 eV
Answer: Option
Explanation:

13.6 eV is required to ionize hydrogen atom.

45.
In a ferromagnetic material, the internal field seen by a dipole is
equal to applied field
equal to applied field minus a contribution from neighbouring dipoles
equal to applied field plus a contribution from neighbouring dipoles
equal to or less than applied field
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers