Electronics and Communication Engineering - Electronic Devices and Circuits
Exercise : Electronic Devices and Circuits - Section 4
- 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
46.
A parallel plate capacitor with air as dielectric has a capacitance C. If the dielectric has a dielectric constant ∈r and the remaining dimensions are the same, the capacitance will be
Answer: Option
Explanation:
Capacitance ∝ ∈r.
47.
Assertion (A): When excited by a unit step voltage, an inductor behaves as open circuit at t = 0.
Reason (R): Inductance has the property of inertia.
Answer: Option
Explanation:
Because of inertia the current cannot change instantaneously. Therefore it behaves as O.C. at t = 0.
48.
A bulb rated at 60 W, 120 V is used for 30 minutes. The charge associated with this operation is
Answer: Option
Explanation:
49.
Two coil have their axis perpendicular to each other. The coefficient of coupling k is
Answer: Option
Explanation:
When axis are perpendicular then there is no mutual coupling.
50.
In a series RLC circuit, p-f is leading if XC < XL.
Answer: Option
Explanation:
If XC < XL power factor is lagging.
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