Electronics and Communication Engineering - Electronic Devices and Circuits
Exercise : Electronic Devices and Circuits - Section 2
- Electronic Devices and Circuits - Section 14
- Electronic Devices and Circuits - Section 27
- Electronic Devices and Circuits - Section 26
- Electronic Devices and Circuits - Section 25
- Electronic Devices and Circuits - Section 24
- Electronic Devices and Circuits - Section 23
- Electronic Devices and Circuits - Section 22
- Electronic Devices and Circuits - Section 21
- Electronic Devices and Circuits - Section 20
- Electronic Devices and Circuits - Section 19
- Electronic Devices and Circuits - Section 18
- Electronic Devices and Circuits - Section 17
- Electronic Devices and Circuits - Section 16
- Electronic Devices and Circuits - Section 15
- Electronic Devices and Circuits - Section 1
- Electronic Devices and Circuits - Section 13
- Electronic Devices and Circuits - Section 12
- Electronic Devices and Circuits - Section 11
- Electronic Devices and Circuits - Section 10
- Electronic Devices and Circuits - Section 9
- Electronic Devices and Circuits - Section 8
- Electronic Devices and Circuits - Section 7
- Electronic Devices and Circuits - Section 6
- Electronic Devices and Circuits - Section 5
- Electronic Devices and Circuits - Section 4
- Electronic Devices and Circuits - Section 3
- Electronic Devices and Circuits - Section 2
21.
A two branch tuned circuit has a coil of resistance R and inductance L in one branch and capacitance C in the second branch. If R is increased, the dynamic resistance
Answer: Option
Explanation:
Dynamic resistance = 
22.
A 1 μF capacitor is connected to 12 V battery. The energy stored in the capacitor is
Answer: Option
Explanation:
Energy 
x 1 x 10-6 x 144 = 72 x 10-6 J
23.
The poles with greater displacement from the real axis correspond to
Answer: Option
Explanation:
As distance from real axis increases, the frequency of oscillation increases.
24.
In figure, the capacitor is charged to 1 V. At t = 0 the switch is closed so that i = e-t. When i = 0.37 A, the voltage across capacitor is
Answer: Option
Explanation:
During discharge of capacitor vC = vR = 0.37 x 1 = 0.37 V
25.
In a series RLC circuit p.f is lagging when f < resonance frequency.
Answer: Option
Explanation:
When f < fr, XC > XL and p.f is leading.
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