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Poonam Tripathi
Subject: Physics
, asked on 1/5/18
Plz answer step by step
Q.63. The reading of the ammeter for a silicon diode in the given circuit is :
(1) 15 mA
(2) 11.5 mA
(3) 13.5 mA
(4) 0
Answer
1
Archana
Subject: Physics
, asked on 27/4/18
How many AND gates are required to form NAND gate?
Answer
1
Jeneeta Eliza John
Subject: Physics
, asked on 26/4/18
Please explain how to solve the following question
Q.37. Figure shows the practical realisation of a logic gate. Identify the logic gate
(1) NAND
(2) NOR
(3) XOR
(4) XNOR
Sol. Answer (1)
Answer
1
Jeneeta Eliza John
Subject: Physics
, asked on 26/4/18
How do we identify if the grounded portion is collector or emitter?:
25. The given transistor amplifier connection is.
(1) Common base connection (2) Common emitter connection.
(3) Common collector connection. (4) All of these
Answer
1
Jeneeta Eliza John
Subject: Physics
, asked on 26/4/18
Please explain how this is full wave rectified
Q.19. In the diagram shown below, the input is across the terminals A and C and the output is across B and D. Then the output is
(1) Zero
(2) Same as input
(3) Full wave rectified
(4) Half wave rectified
Answer
1
Muhammad Arafath R Z
Subject: Physics
, asked on 18/4/18
Online 2018 mains Logic gate question
Q.18. Truth table for the following digital circuit will be :
1.
2.
3.
4.
Answer
1
Charu
Subject: Physics
, asked on 12/4/18
Q.45. In the circuit below, A and B represents two inputs and C represents the output. The circuit represents :-
(1) AND gate
(2) NOR gate
(3) OR gate
(4) NAND gate
Answer
3
Dipesh Malhotra
Subject: Physics
, asked on 2/4/18
Q.28. The forward biased diode connection is
Answer
1
Annabeth Chase
Subject: Physics
, asked on 31/3/18
Solve this plzzz..
Answer
1
Annabeth Chase
Subject: Physics
, asked on 31/3/18
Solve this plzzz..
Q3. A Zener diode is specified having a breakdown voltage of 9.1 V with a maximum power dissipation of 364 mW. What is the maximum current that the diode can handle?
Answer
1
Annabeth Chase
Subject: Physics
, asked on 31/3/18
In given circuit determine I, I
1
and I
2
Answer
1
Annabeth Chase
Subject: Physics
, asked on 31/3/18
(a) Calculate the value of V
0
and I if the Si diode and the Ge diode start conducting at 0.7 V and 0.3 V respectively, In the given circuit. (b) If the Ge diode connection be reversed, What will be the new values of V
0
and I ?
Answer
1
Annabeth Chase
Subject: Physics
, asked on 31/3/18
Solve this plzzz..
Q. Suppose a pure Si crystal has 5 × 10
28
atoms m
–3
. It is doped by 1 ppm concentration of pentavalent As. Calculate the number of electrons and hole. (Given that n
i
= 1.5 × 10
16
m
–3
.)
Answer
1
Aparna Sahu
Subject: Physics
, asked on 27/3/18
Solve this.
Q.
What should be the value of unity gain frequency for a short circuit CE transistor with gain of 30 at
4 MHz and cut-off frequency of about 100 kHz?
40 MHz
80 MHz
120 MHz
150 MHz
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 16/3/18
No links please
Q.14. Explain NOR gate with truth table and block diagram.
Answer
1
1
2
3
4
5
Next
What are you looking for?
Q.63. The reading of the ammeter for a silicon diode in the given circuit is :
(1) 15 mA
(2) 11.5 mA
(3) 13.5 mA
(4) 0
Q.37. Figure shows the practical realisation of a logic gate. Identify the logic gate
(1) NAND
(2) NOR
(3) XOR
(4) XNOR
Sol. Answer (1)
25. The given transistor amplifier connection is.
(1) Common base connection (2) Common emitter connection.
(3) Common collector connection. (4) All of these
Q.19. In the diagram shown below, the input is across the terminals A and C and the output is across B and D. Then the output is
(1) Zero
(2) Same as input
(3) Full wave rectified
(4) Half wave rectified
Q.18. Truth table for the following digital circuit will be :
1.
2.
3.
4.
(1) AND gate
(2) NOR gate
(3) OR gate
(4) NAND gate
Q3. A Zener diode is specified having a breakdown voltage of 9.1 V with a maximum power dissipation of 364 mW. What is the maximum current that the diode can handle?
Q. Suppose a pure Si crystal has 5 × 1028 atoms m–3. It is doped by 1 ppm concentration of pentavalent As. Calculate the number of electrons and hole. (Given that ni = 1.5 × 1016 m–3.)
Q. What should be the value of unity gain frequency for a short circuit CE transistor with gain of 30 at
4 MHz and cut-off frequency of about 100 kHz?
80 MHz
120 MHz
150 MHz
Q.14. Explain NOR gate with truth table and block diagram.