CBSE
Multiple Choice QuestionsIn a p-n junction diode, change in temperature due to heating
Affects only reverse resistance
Affects only forward resistance
Affects the overall V - I characteristics of p-n junction
Does not affect resistance of p-n junction
The following figure shows a logic gate circuit with two inputs A and B and the output C. The voltage waveforms of A, B and C are as shown below:
The logic curcuit gate is
AND gate
NAND gate
NOR gate
NOR gate
In the combination of the following gates the output Y can be written in terms of inputs A and B as
In the circuit shown in the figure, the input voltage Vi is 20 V, VBE = 0 and VCE = 0. The values of IB, IC and β are given by
IB = 40 μA, IC = 10 mA, β = 250
IB = 25 μA, IC = 5 mA, β = 200
IB = 40 μA, IC = 5 mA, β = 125
IB = 20 μA, IC = 5 mA, β = 250
The given electrical network is equivalent to
AND gate
NOR gate
OR gate
OR gate
In forward biased if the p-n junctions diode is forward biased, then width of potential barrier in p-n junction diode
remains constant
increase
decrease
None of these
Which one of the following represents forward bias diode?
A forward biased diode is
In a common emitter transistor amplifier, the audio signal voltage across the collector is 3 V. The resistance of collector is 3 kΩ. If current gain is 100 and the base resistance is 2 kΩ, the voltage and power gain of the amplifier is
200 and 1000
15 and 200
150 and 15000
150 and 15000
The following circuit represents
OR gate
XOR gate
AND gate
NAND gate
