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Sandra Saju
Subject: Physics
, asked on 22/2/18
Give some application of Hall effect. ( Semiconductors )
Answer
1
Sandra Saju
Subject: Physics
, asked on 22/2/18
Why P type or trivalent impurities are called as acceptor impurity?
Answer
1
Sandra Saju
Subject: Physics
, asked on 22/2/18
Why a contact difference of potential exist in PN junction ?
Answer
2
Sandra Saju
Subject: Physics
, asked on 22/2/18
If a small voltage is applied to a p-n junction diode, how will the barrier potential be affected when it is (i) forward biased, and (ii) reverse biased ?
Answer
1
Sandra Saju
Subject: Physics
, asked on 22/2/18
What causes the setting up of high electric field even for small reverse bias voltage across the diode ?( No links please )
Answer
1
Sandra Saju
Subject: Physics
, asked on 22/2/18
Write clearly, why in the case of transistor (i) the base is thin and lightly doped and (ii) the emitter is heavily doped.
Answer
1
Sandra Saju
Subject: Physics
, asked on 21/2/18
Some important questions from the chapter Semiconductors. Please experts need help.
Answer
1
Aashish Rohilla
Subject: Physics
, asked on 20/2/18
Q.19.(a). The following pulse signal is connected to logic gate as shown. Draw the output waveform for (Y) for the gate.
Answer
1
Archana
Subject: Physics
, asked on 20/2/18
answer the second part !!!
Q.13. How the thickness of depletion layer in a p-n junction diode changes when it is
(i) .Forward biased
(ii) .Reversed biased.
In the following circuit which one of the two diodes is forward biased and which is reversed biased?
Answer
2
Tanaya
Subject: Physics
, asked on 20/2/18
Q.37. In only one of the circuits given below, the lamp L lights. Which circuit is it? Give reason for your answer.
Circuit (a)
Circuit (b)
Answer
1
Ayushi Aggarwal
Subject: Physics
, asked on 18/2/18
Ques 24 both the choices
Answer
1
Sandra Saju
Subject: Physics
, asked on 18/2/18
Please help with this question. No links please.
Q.2. (a) Draw the circuit diagram of a full wave rectifier using p-n junction diode.
Explain its working and show the output, input waveforms.
(b) Show the output waveforms (Y) for the following inputs A and B of
(i) OR gate (ii) NAND gate
Answer
1
Sandra Saju
Subject: Physics
, asked on 18/2/18
Please help with question without providing any links.
Q.2. Sunil and his parents were travelling to their village in their car. On the way his mother noticed some grey coloured panels installed on the roof of a low building. She enquired from Sunil what those panels were and Sunil told his mother that those were solar panels.
(a) What were the values displayed by Sunil and his mother? State one value for each.
(b) In what way would the use of solar panels prove to be very useful?
(c) Name the semiconductor device used in solar panels. Briefly explain with the help of a diagram, how this device works.
Answer
1
Sandra Saju
Subject: Physics
, asked on 18/2/18
Identify the gate equivalent to the circuit shown in the figure. Write its truth table.:
Answer
2
Sandra Saju
Subject: Physics
, asked on 18/2/18
Q. Identify the equivalent gate represented by the circuit shown in the figure. Draw its logic symbol and write the truth table.
Answer
1
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Q.13. How the thickness of depletion layer in a p-n junction diode changes when it is
(i) .Forward biased
(ii) .Reversed biased.
In the following circuit which one of the two diodes is forward biased and which is reversed biased?
Circuit (a)
Circuit (b)
Q.2. (a) Draw the circuit diagram of a full wave rectifier using p-n junction diode.
Explain its working and show the output, input waveforms.
(b) Show the output waveforms (Y) for the following inputs A and B of
(i) OR gate (ii) NAND gate
Q.2. Sunil and his parents were travelling to their village in their car. On the way his mother noticed some grey coloured panels installed on the roof of a low building. She enquired from Sunil what those panels were and Sunil told his mother that those were solar panels.
(a) What were the values displayed by Sunil and his mother? State one value for each.
(b) In what way would the use of solar panels prove to be very useful?
(c) Name the semiconductor device used in solar panels. Briefly explain with the help of a diagram, how this device works.