Daily Practice Paper_ Electronic Devices for JEE Main and NEET Candidates_For CBSE/ICSE and other state board students.

1. Sanjeet Singh
www.physicsgurukul.com
1. In the network shown:
(a) The potential difference across 2D is 5V
(b) Current through resistor equals 0.25 A
(c) Current through diode 1D is 1.25 A
(d) Current through diode 2D is 1.25 A.
2. A sinusoidal voltage of peak value 200 volt is
connected to a diode and resistor R in the circuit
shown so that half wave rectification occurs. If the
forward resistance of the diode is negligible
compared to R, the r.m.s voltage across R is
approximately
(a) 200 (b) 100 (c)
100
2
(d) 283
3. A sinusoidal voltage of r.m.s value of 200 volt is
connected to the diode and capacitor C in the circuit
shown so that half wave rectification occurs. The
final potential difference in volt across C is
(a) 500 V (b) 200 V (c) 283 V (d) 141 V
4. Figure shows the connections of two ideal diodes
and two capacitors C and 2C. A 120 volt battery is
connected to the input terminals with a at positive
potential and b at lower potential. The output
voltage is a
(a) 60 V (b) 40 V
(c) 30 V (d) 20 V.
5. The average value of output D.C. current in a full
wave rectifier is
(a) 0
2
I
(b) 0I

(c) 0
2
I
(d) 02I

6. The average value of output direct current in a half
wave rectifier will be
(a) 02I

(b) 0
2
I
 (c) 0
2
I
(d) 0I

7. In figure the approximate value of potential drop,
0V across R is:
(a) 0 (b) -5V (c) 5V (d) 10 V
8. Two junction diodes one of germanium (Ge) and
other of silicon are connected as shown in figure to a
battery of emf 12 V and a load resistance 10 K .
The germanium diode conducts at 0.3 V and silicon
diode at 0.7 V. When a current flows in the circuit,
the potentials of the terminal Y will be
(a) 12 V (b) 11 V (c) 11.3 V (d) 11.7 V
Electronic Devices

2. Sanjeet Singh
www.physicsgurukul.com
9. What is the current in the circuit shown in figure?
(a) 0 amp (b) 2
10
amp (c) 1 amp (d) 0.10 amp
10. In the figure potential difference between A and
B is
(a) 0 (b) 5 volt (c) 10 volt (d) 15 volt