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799.

The trigonometric Fourier series of an even function does not have the [1 mark]
(A) dc term
(B) cosine terms
(C) sine terms
(D) odd harmonic terms

last reply by CpjJwWHV • 13 years ago • asked in Electronics and Communication Engineering, 2011

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800.

When the output Y in the circuit below is “1”, it implies that data has

[1 mark]
(A) changed from “0” to “1”
(B) changed from “1” to “0”
(C) changed in either direction
(D) not changed

asked in Electronics and Communication Engineering, 2011

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801.

The logic function implemented by the circuit below is (ground implies a logic “0”)

[1 mark]
(A) F = AND(P, Q)
(B) F = OR(P, Q)
(C) F = XNOR(P, Q)
(D) F = XOR(P, Q)

asked in Electronics and Communication Engineering, 2011

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802.

The circuit below implements a filter between the input current i₁ and the output voltage v_o. Assume that the opamp is ideal. The filter implemented is a

[1 mark]
(A) low pass filter
(B) band pass filter
(C) band stop filter
(D) high pass filter

asked in Electronics and Communication Engineering, 2011

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803.

A silicon PN junction is forward biased with a constant current at room temperature. When the temperature is increased by 10°C , the forward bias voltage across the PN junction [1 mark]
(A) increases by 60 mV
(B) decreases by 60 mV
(C) increases by 25 mV
(D) decreases by 25 mV

asked in Electronics and Communication Engineering, 2011

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804.

In the circuit shown below, the Norton equivalent current in amperes with respect to the terminals P and Q is

[1 mark]
(A) 6.4 – j4.8
(B) 6.56 – j7.87
(C) 10 + j0
(D) 16 + j0

asked in Electronics and Communication Engineering, 2011

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