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1.
Which of the following does not vary with plate or grid voltages
2.
The saturation current in a diode valve is governed by
3.
If 
, 
and 
are the doping levels of emitter, base and collector respectively of a transistor, then
, and are the doping levels of emitter, base and collector respectively of a transistor, then
4.
Two identical capacitors 
and 
are charged to the same potential 
and are connected in two circuits at 
, as shown in figure. The charge on the capacitors at time 
are respectively
and are charged to the same potential and are connected in two circuits at , as shown in figure. The charge on the capacitors at time are respectively
5.
If a full wave rectifier circuit is operating from 50Hz mains, the fundamental frequency in the ripple will be
6.
In a cubic unit cell of bcc structure, the lattice points (
, number of atoms) are
, number of atoms) are
7.
The output in the circuit of figure is taken across a capacitor. It is as shown in figure
8.
An electron-hole pair is formed when light of maximum wavelength 6000 
is incident on the semiconductor. What is the band gap energy of the semiconductor?
is incident on the semiconductor. What is the band gap energy of the semiconductor?
9.
A triode whose mutual conductance is 
and anode resistance is 
, is used as an amplifier whose amplification is 10. The resistance connected in plate circuit will be
and anode resistance is , is used as an amplifier whose amplification is 10. The resistance connected in plate circuit will be
10.
When a semiconductor is heated, its resistance