Electrical Engineering: Control system MCQ
21. Question
The positive, negative and zero sequence impedances of a three phase generator are Z1 , Z2 and Z0 respectively. For a line-to-line fault with fault impedance Zf ,the fault current is If1 = kIf . where I f is the fault current with zero fault impedance. The relation between Zf and k is
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22. Question
Consider a unity feedback system with forward transfer function given by
G(S)= 1/(s+1)(s+2)
The steady-state error in the output of the system for a unit-step input is _________(up to 2 decimal places).
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23. Question
A continuous-time input signal x(t) is an eigenfunction of an LTI system, if the output is
t x(t) , where k isejωt
an eigenvalue and is complex exponential signal
, whereejωt
is a complex exponential signal
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24. Question
The graph of a network has 8 nodes and 5 independent loops. The number of branches of the graph is
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25. Question
A system transfer function is
If a 1 = b 1 = 0, and all other coefficients are positive, the transfer function represents a
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