Electronics and Communication Engineering - Networks Analysis and Synthesis
Exercise : Networks Analysis and Synthesis - Section 3
- Networks Analysis and Synthesis - Section 14
- Networks Analysis and Synthesis - Section 27
- Networks Analysis and Synthesis - Section 26
- Networks Analysis and Synthesis - Section 25
- Networks Analysis and Synthesis - Section 24
- Networks Analysis and Synthesis - Section 23
- Networks Analysis and Synthesis - Section 22
- Networks Analysis and Synthesis - Section 21
- Networks Analysis and Synthesis - Section 20
- Networks Analysis and Synthesis - Section 19
- Networks Analysis and Synthesis - Section 18
- Networks Analysis and Synthesis - Section 17
- Networks Analysis and Synthesis - Section 16
- Networks Analysis and Synthesis - Section 15
- Networks Analysis and Synthesis - Section 1
- Networks Analysis and Synthesis - Section 13
- Networks Analysis and Synthesis - Section 12
- Networks Analysis and Synthesis - Section 11
- Networks Analysis and Synthesis - Section 10
- Networks Analysis and Synthesis - Section 9
- Networks Analysis and Synthesis - Section 8
- Networks Analysis and Synthesis - Section 7
- Networks Analysis and Synthesis - Section 6
- Networks Analysis and Synthesis - Section 5
- Networks Analysis and Synthesis - Section 4
- Networks Analysis and Synthesis - Section 3
- Networks Analysis and Synthesis - Section 2
16.
In the circuit shown in figure, for different values of R, the values of V and I are given. Other elements remaining the same. when R = ∞, V = 5 volt 
- R = 0, I = 2.5 A
- R = 3 Ω, the value of V is given by
Answer: Option
Explanation:
When R = ∞, V = 5v, 
Voc = 5V circuit is open
When R = 0, I = 2.5A Isc = 2.5 circuit short circuited 
Hence the voltage across 3 Ω is 3 volt.
17.
Which statement is true for an ac circuit?
Answer: Option
Explanation:
Active and apparent power are equal for resistive circuit. Otherwise active power is less than apparent power.
18.
Three inductors each 30 mH are connected in delta. The value of inductance or each arm of equivalent star is
Answer: Option
Explanation:
19.
If the iron core of a coil is removed so that it becomes an air cored coil, its inductance
Answer: Option
Explanation:
μr for air is 1 while μr for iron is more than 1.
20.
In figure, E = 1 V (rms value). The average power is 250 mW. Then phase angle between E and I is
Answer: Option
Explanation:
EI cos θ = 0.25 or I cos θ = 0.25
From above equations cos θ = 0.707 and θ = 45°.
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