PROF
. V. A. BHEDA
SEMESTER

I I
UNIT No.

01 ELECTRIC & ELECTRONIC CIRCUITS
CH

No.

01
D.C. CIRCUITS
Que

1 obtain the expression for the gro
wth of charge on capacitor at time t in R

C series circuit
with
D.C. source
Que

2 obtain the expression for the decay of charge on capacitor at time t in R

C series circuit with
D.C. source
Que

3 What is the time constant in the case of charging and disc
harging position in R

C series circuit
?
Que

4 Show that the unit of time
constant is second
Que

5 Show that the increasing charge on C in R

C circuit to rise 95% of it is maximum value in a
time interval equal to 3 time constant
[take
]
Que

6 Find out the heat energy dissipated
from the resistance for t
he time during which the
charge
becomes zero from maximum in the decreasing charge condition at time t
Que

7 obtain the expression for the growth of current at time t
in R

L
series circuit with D.C. source
Que

8 obtain the expression for the decay of current at time t
in R

L
series circuit with D.C. source
Que

9 What is the time constant in the case of increasing current and decreasing current in R

L
series circuit
?
Que

10 A resistance R and an inductor L are connected in series with a battery of V volt. Calculate
the w
ork done by the battery for a time du
ring which the current become maximum
Que

11 Find out the heat energy dissipated from the resistance for the time during which the current
becomes zero from maximum in the decreasing current condition at time t
Que

1
2 Obtain the se
cond order differential equation for the growth of charge on a capacitor in R

L

C
circuit with D.C. source and Sole it
’
s
Que

13 Write the second order differential equation for the growth of charge on a capacitor in R

L

C
circuit with D.C. source and Sole it’s
Que

14 Write the second order differential equation for the growth of charge on a capacitor in R

L

C
circuit with D.C. source and Sole it’s
Que

15 Define Ohm law
Que

16 Define Kirchhoff law
Que

17 Define Faraday law
Que

18 What is principle of condenser
Que

1
9
What is unit of capacity
Que

20 What is principle of inductor
Que

21 What is unit of inductance
Que

22 What do you mean by Time constant
Que

23 Write down of growth of charge in R

C series circuit
Que

24 Write down of decay of charge in R

C series circuit
Que

25 Write down of growth of current in R

L series circuit
Que

26 Write down of decay of current in R

L series circuit
Que

27 Define
Henr
y
Que

28 What is the physical significance of quality
factor a capacitor
Que

29 What is the physical significance of quality factor an inductor
Que

30
What is full form of A.F.O
Que

31 What is sliding effect
?
Que

32 What is rectifier Write type
?
Que

33 What is ripple factor
Que

34 What is value of ripple factor half wave rectifier
Que

35 What is value of ripple factor full wave rectifier
Que

34 What is value of
efficiency of half wave rectifier
Que

34 What is value of
efficiency of
full wave rectifier
Que

35 What is prop
erty of a choke is used in filtering
Que

36 Write use of Schering bridge
Que

37 Write use of Wein bridge
Que

38 What is rectification
?
CH

No.

0
2
A.C. CIRCUITS
Que

1 Explain the method to determine value of an inductance by
M
axwell
bri
dge
Que

2 Draw the circuit diagram of Schering bridge to find out of value capacitance
Que

3 Draw the circuit diagram of Hay bridge to find out of value an inductance for high value Q
Que

4 Draw the circuit diagram of Wein bridge to f
ind out
frequency of A
.C. source
CH

No.

0
3
DIODE CIRCUITS
Que

1 Draw the circuit diagram of half wave rectifier. Draw its input and output waves and explain its
working
Que

2 Draw the circuit diagram of full wave rectifier. Draw its input and output waves and explain its
working
Que

3 Obtain the equation for half wave rectifier output D.C
. current
,
output D.C
.
voltage
,
Ripple factor and RMS value
of load current
Que

4 Obtain the equation for full wave rectifier output D.C
. current
,
output D.C
.
voltage
,
Ripple factor and RMS value
of load current
Que

5 Prove that for half wave rectifier ripple factor is 1.21.
Que

6 Show that maximum efficiency of half wave rectifier is 40.6%
Que

7 Prove that for full wave rectifier
ripple factor is 0.482.
Que

8 Show that maximum efficiency of
full
wave rectifier is 81.2%
Que

9 Explain the working of a bridge rectifier.
Que

10 Explain the importance of filter circuit in rectifier
Que

11 Draw the circuit diagram of full wave rectifie
r with inductor
filter and obtain formula for ripple
factor
Que

12 Draw the circuit diagram of full wave rectifier with capacitor filter and obtain formula for ripple
factor
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