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775.

In the single-stage transistor amplifier circuit shown in Fig, the capacitor C_E is removed. Then, the ac small-signal midband voltage gain of the amplifier

[1 mark]
(a) increases
(b) decreases
(c) is unaffected
(d) drops to zero

asked in Electrical Engineering, 2001

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776.

The minimum number of wattmeter (s) required to measure 3-phase, 3-wire balanced or unbalanced power is [1 mark]
(A) 1
(B) 2
(C) 3
(D) 4

asked in Electrical Engineering, 2001

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777.

If an energy meter disc makes 10 revolutions in 100 seconds when a load of 450 W is connected to it, the meter constant (in rev/kWh) is [1 mark]
(A) 1000
(B) 500
(C) 1600
(D) 800

asked in Electrical Engineering, 2001

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778.

Given the homogeneous state-space equation . the steady state value of x_ss = Lim_x→∞ x(t), given the initial state value of x(0) = [10 - 10]^T, is
[1 mark]

asked in Electrical Engineering, 2001

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779.

The polar plot of a type-1, 3-pole, open-loop system is shown in Fig. The closed - loop system is

[1 mark]
(a) always stable
(b) marginally stable
(c) unstable with one pole on the right half s-plane
(d) unstable with two poles on the right half s-plane

asked in Electrical Engineering, 2001

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780.

A lossless radial transmission line with surge impedance loading
[1 mark]
(A) takes negative VAR at sending end and zero VAR at receiving end
(B) takes positive VAR at sending end and zero VAR at receiving end
(C) has flat voltage profile and unity power factor at all points along it
(D) has sending end voltage higher than receiving end voltage and unity power factor at sending end.

asked in Electrical Engineering, 2001

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