Exercise: Signals And Systems

Questions for: Signals And Systems

In a oscillator, a sine wave generator starts at t = 0. It consist of
A:
Pure sine wave
B:
Pure cosine wave
C:
Unity for t > 0
D:
2∪(t) - 1
Answer: A
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In RLC circuits the state variables generally selected are
A:
voltages across capacitors
B:
currents through resistances and voltages across capacitors
C:
currents through resistances and capacitances
D:
currents through inductances and voltages across capacitances
Answer: D
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If u is input, y is output and a, b are constants, the system y = au + b
A:
is linear
B:
is nonlinear
C:
may be linear or nonlinear dependig on values of a and b
D:
may be linear or nonlinear depending on value of u
Answer: B
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The energy of highest value of Autocorrelation of a function 100 cos 50 pt is
A:
50
B:
10
C:
200
D:
zero
Answer: B
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If f(t) ↔ F(jω), ↔
A:
F(jω)
B:
[F(jω)]n
C:
(jω)n F(jω)
D:
Answer: C
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