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256.
Linked Answer Questions :
[1] A signal is processed by a casual filter with transfer function G(s). For a distortion free output signal waveform, G(s) must [2 marks]
(A) provide zero phase shift for all frequency
(B) provide constant phase shift for all frequency
(C) provide linear phase shift that is proportional to frequency
(D) provide a phase shift that is inversely proportional to frequency[2] G(z) = αz-1 + βz-3 is a low-pass digital filter with a phase characteristics same as that of the above question if [2 marks]
(A) α = β
(B) α = - β
(C) α = β(1/3)
(D) α = β–(1/3)asked in Electrical Engineering, 2007
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257.
Statement for Linked Answer Questions :
The associated figure shows the two types of rotate right instructions R1, R2 available in a microprocessor where Reg is a 8-bit register and C is the carry bit. The rotate left instruction L1 and L2 are similar except that C now links the most significant bit of Reg instead of the least significant one.
[1] Suppose Reg contains the 2’s complement number 11010110. If this number is divided by 2 the answer should be [2 marks]
(A) 01101011
(B) 10010101
(C) 11101001
(D) 11101011[2] Such a division can be correctly performed by the following set of operations
[2 marks]
(A) L2, R2, R1
(B) L2, R1, R2
(C) R2, L1, R1
(D) R1, L2, R2asked in Electrical Engineering, 2007
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258.
Statement for Linked Answer Questions :
Consider the R-L-C circuit shown in figure.
[1] For a step-input ei, the overshoot in the output eo will be [2 marks]
(A) 0, since the system is not under-damped
(B) 5%
(C) 16%
(D) 48%[2] If the above step response is to be observed on a non-storage CRO, then it would be best to have the ei as a [2 marks]
(A) step function
(B) square wave of frequency 50 Hz
(C) square wave of frequency 300 Hz
(D) square wave of frequency 2.0 kHzasked in Electrical Engineering, 2007
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