B is doped in Si or Ge, then we will get
Options
(a) P-type semiconductor (b) N-type semiconductor (c) An insulator (d) A conductor
Correct Answer:
P-type semiconductor
Explanation:
No explanation available. Be […]
A solid which is transparent to visible light and whose conductivity increases with temperature is formed by
Options
(a) Metallic binding (b) Ionic binding (c) Covalent binding (d) Van der walls binding
Correct […]
A change of 0.04 V takes place between the base and the emitter when an input signal is connected to the CE transistor amplifier. As a result, 20μA change take place in the base current […]
In a semiconductor
Options
(a) There are no free electrons at any temperature (b) The number of free electrons is more than that in a conductor (c) There are no free electrons at […]
Zener diode is used
Options
(a) as an amplifier (b) as a rectifier (c) as an oscillator (d) as a voltage regulator
Correct Answer:
as a voltage regulator
Explanation:
No explanation available. Be […]
The logic behind NOR gate is that it gives
Options
(a) high output when one input is low and other is high (b) high output when both inputs are low (c) high output […]
When aluminium is added as an impurity to silicon, the resulting material is
Options
(a) P-type semiconductor (b) P-type conductor (c) N-type semiconductor (d) N-type conductor
Correct Answer:
P-type semiconductor
Explanation:
No explanation […]
The valence band and the conductance band of a solid overlap at low temperature. The solid may be
Options
(a) A metal (b) A semiconductor (c) An insulator (d) None of these
Correct […]
If the lattice parameter for a crystalline structure is 3.6 Å, then the atomic radius in fcc crystal is
Options
(a) 2.92 Å (b) 1.27 Å (c) 1.81 Å (d) 2.1 Å
Correct […]
In P-N junction having depletion layer of thickness 10⁻⁶ m, the potential across it is 0.1 V. The electric field is
Options
(a) 10⁷ (b) 10⁻⁶ (c) 10⁵ (d) 10⁻⁵
Correct Answer:
10⁵
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