MCQ
A Zener diode:
- AIs a lightly doped junction diode.
- BHeavily doped junction diode.
- CIs either p-type or n-type.
- DHas no p-n junction.
✓
Answer
- Heavily doped junction diode.
Explanation:
The reverse breakdown voltage depends on doping of the diode. Hence, in the Zener diode the heavy doping of its p-n junction is done. The depletion region formed in the diode is very thin (<1 m) and the reverse bias voltage of about 5 V which is less than ordinary diode.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
According to Bohr's theory the radius of electron in an orbit described by principal quantum number n and atomic number Z is proportional to
|
(a) |
(b) |
(c) |
(d) |
In producing a pure spectrum, the incident light is passed through a narrow slit placed in the focal plane of an achromatic lens because a narrow slit:
A nucleus ruptures into two nuclear parts which have their velocity ratio equal to 2 : 1. What will be the ratio of their nuclear size (nuclear radius)
|
(a) |
(b) 1 : |
(c) |
(d) 1 : |
Kilowatt hour is the unit of :
A magnetic field can be produced by :
The work-function of a metal is:
Find the odd one out.
No bias is applied to a P-N junction, then the current
|
(a) Is zero because the number of charge carriers flowing on both sides is same |
|
(b) Is zero because the charge carriers do not move |
|
(c) Is non-zero |
|
(d) None of these |
The focal length of a convex lens is 10 cm and its refractive index is 1.5. If the radius of curvature of one surface is 7.5 cm, the radius of curvature of the second surface will be
|
(a) 7.5 cm |
(b) 15.0 cm |
(c) 75 cm |
(d) 5.0 cm |
The neutral temperature of a thermocouple is 350℃ when the cold junction is at 0℃ When the cold junction is immersed in a bath of 30℃, the inversion temperature is
|
(a) 700℃ |
(b) 600℃ |
(c) 350℃ |
(d) 670℃ |