The output of OR gate is 1(one)
The output of OR gate is 1(one)
Options
(a) If both inputs are zero (b) If either or both inputs are one (c) Only if both inputs are one (d) If either input […]
Physics
In semiconductor at a room temperature
In semiconductor at a room temperature
Options
(a) The valence band is partially empty and the connection band is partially filled (b) The valence band is completely filled and the conduction band is […]
Identify the wrong statement with reference to solar cell
Identify the wrong statement with reference to solar cell
Options
(a) it is a p-n junction diode with no external bias (b) It uses materials of high optical absorption (c) It uses materials […]
In n-type semiconductor, electrons are majority charge carriers
In n-type semiconductor, electrons are majority charge carriers but it does not show any negative charge. The reason is
Options
(a) electrons are stationary (b) electrons neutralise with holes (c) mobility of electrons […]
The manifestation of band structure in solids is due to
The manifestation of band structure in solids is due to
Options
(a) Heisenberg’s uncertainty principle (b) Pauli’s exclusion principle (c) Bohr’s correspondence principle (d) Boltzmann’s law
Correct Answer:
Pauli’s exclusion principle
Explanation:
No […]
If the band gap between valence band and conduction band in a material is 5.0 eV,
If the band gap between valence band and conduction band in a material is 5.0 eV, then the material is
Options
(a) semiconductor (b) good conductor (c) superconductor (d) insulator
Correct Answer:
insulator
The difference in the variation of resistance with temperature in a metal
The difference in the variation of resistance with temperature in a metal and a semiconductor arises essentially due to the difference in the
Options
(a) Variation of scattering mechanism with temperature (b) Crystal […]
On adjusting the P-N junction diode in forward bias,
On adjusting the P-N junction diode in forward bias,
Options
(a) Depletion layer increases (b) Resistance increases (c) Both decreases (d) none of these
Correct Answer:
Both decreases
Explanation:
In forward bias arrangement of […]
In insulators (CB is Conduction Band and VB is Valence Band)
In insulators (CB is Conduction Band and VB is Valence Band)
Options
(a) VB is partially filled with electrons (b) CB is partially filled with electrons (c) CB is empty and VB is […]
If a full wave rectifier circuit is operating from 50 Hz mains, the fundamental
If a full wave rectifier circuit is operating from 50 Hz mains, the fundamental frequency in the ripple will be
Options
(a) 50 Hz (b) 70.7 Hz (c) 100 Hz (d) 25 Hz
Correct […]