Materials and Components
The field pattern of a solenoid is similar to that of bar magnet.
Answer: A
No answer description available for this question.
Enter details here
In a rare gas, the molecules of some atoms have an excess positive or negative charge. The electric field tends to shift positive ions relative to negative ions. This is known as ionic polarization.
Answer: A
No answer description available for this question.
Enter details here
The circumference of an electron orbit is equal to integer times the wavelength of electron.
Answer: A
No answer description available for this question.
Enter details here
A piece of iron is placed in a magnetic field
Answer: B
No answer description available for this question.
Enter details here
In a metal, the drift velocity of electrons in the presence of a electric field E is
Answer: A
Drift velocity is proportional to field strength.
Enter details here
A permeable substance is one
Answer: D
No answer description available for this question
Enter details here
Assertion (A): Silicon is the most favoured semiconductor material.
Reason (R): PIV for silicon diode is more than that for germanium diode.
Answer: C
Higher PIV for silicon is a definite advantage.
Enter details here
Assertion (A): In many materials, dielectric polarization causes mechanical distortion.
Reason (R): If dielectric polarization causes mechanical distortion then mechanical distortion must cause dielectric polarization.
Answer: C
No answer description available for this question.
Enter details here
Assertion (A): If E is available energy state eV and EF is Fermi level, then probability of energy state E being occupied = 0.5.
Reason (R): 
.
Answer: B
E = EF, f(E) = 0.5.
Enter details here
The temperature below which certain materials are antiferromagnetic and above which they are paramagnetic is called
Answer: C
No answer description available for this question.
Enter details here
Topics
- Materials and Components
- Electromagnetic Field Theory
- Networks Analysis and Synthesis
- Measurements and Instrumentation
- Analog Electronics
- Automatic Control Systems
- Radio Receivers
- Satellite Communication
- Signals and Systems
- Exam Questions Papers
- Electronic Devices and Circuits
- Power Electronics
- Digital Electronics
- Communication Systems
- Microwave Communication
- Microprocessors
- Matching Questions