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43.

For the circuit shown below, what is the value I ?

(a) 10 A
(b) 6A
(c) 3.7 A
(d) 3 A

asked in Electrical Paper-1, 2007

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44.

What is the driving point operational impedance of the network given below?

a. (2s+1)/(3s+2)
b. (s+1)/(2s+2)
c. s/(3s+2)
d. (s+2)/(s+3)

asked in Electrical Paper-1, 2007

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45.

If Z(s) = (s²+8s+15)/(s²+4s) for the circuit given below, then what is the value of R₁?

a. 17/16 Ω
b. 9/8 Ω
c. 19/16 Ω
d. 21/16 Ω

asked in Electrical Paper-1, 2007

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46.

The driving point impedance, Z(s) of an RC network is given by
Z(s) = (s²+4s+3)/[s(s+2)]
If it is realized in the firstfosterform, then what shall be the first and the last elements?
(a) Resistance: Capacitance
(b) Capacitance: Resistance
(c) Resistance: Resistance
(d) Capacitance: Capacitance

asked in Electrical Paper-1, 2007

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47.

A 3-phase 3-wire supply feeds a star connected load consisting of 3 equal resistors. If one of the resistors is to be removed, then what is the reduction in power as compared to the original power?
(a) 25% of the original power
(b) 33.3% of the original power
(c) 50% of the original power
(d) 66.6% of the original power

asked in Electrical Paper-1, 2007

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48.

When is a series R-L-C circuit overdamped?
a. R²/4L² = 1/LC
b. R²/4L < 1/C
c. R²/4L > 1/C
d. R²/4C² = 1/LC

asked in Electrical Paper-1, 2007

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