Advertisements
Advertisements
Question
The amplification factor of a triode operating in the linear region depends strongly on ____________ .
Options
the temperature of the cathode
the plate potential
the grid potential
the separations of the grid from the cathode and the anode
Solution
the separations of the grid from the cathode and the anode
When the triode operating in the linear region, value of plate voltage, grid voltage and plate current is already specified (or fixed). If the grid is near the cathode, then we assume that grid lie in the region where the space charge density is more. There is a chance that grid will pick up electrons from the space charge region of cathode and effect the plate current and hence amplification factor (as we know that amplification factor will depend on the plate current). If the grid is far from the cathode, it will reduce the grid voltage and hence the amplification factor also get affected.
APPEARS IN
RELATED QUESTIONS
The following figure shows the input waveforms (A, B) and the output waveform (Y) of a gate. Identify the gate, write its truth table and draw its logic symbol.
Write the truth table for the combination of the gates shown. Name the gates used.
Identify the logic gates marked 'P' and 'Q' in the given circuit. Write the truth table for the combination.
You are given the two circuits as shown in following figure. Show that circuit
- acts as OR gate while the circuit
- acts as AND gate.
(a)
(b)
You are given a circuit below. Write its truth table. Hence, identify the logic operation carried out by this circuit. Draw the logic symbol of the gate it corresponds to.
The following figure shows the input waveforms (A, B) and the output waveform (Y) of a gate. Identify the gate, write its truth table and draw its logic symbol.
Why is the linear portion of the triode characteristic chosen to operate the triode as an amplifier?
Why are NOR gates considered as universal gates?
The outputs of two NOT gates are fed to a NOR gate. Draw the logic circuit of the combination of gates. Write its truth table. Identify the gate equivalent to this circuit.
A radar is sending out pules of 1 micro second duration at interval of 100 micro-second. The range of the radar is
For the given circuit, the input digital signals are applied at terminals A, B, and C. What would be the output at terminal y?
For the given circuit, the input digital signals are applied at the terminals A, B and C. What would be the output at the terminal y?
Truth table for the given circuit (Figure) is ______.
Two car garages have a common gate which needs to open automatically when a car enters either of the garages or cars enter both. Devise a circuit that resembles this situation using diodes for this situation.
A logic gate circuit has two inputs A and B and output Y. The voltage waveforms of A, B and Y are shown below.
The logic gate circuit is ______.
Which one of the following is the Boolean expression for NOR gate?
