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The impulse response h(t) of a linear time-invariant continuous time system is described by h(t) = exp (at) u(t) + exp (βt) u (- t), where u(t) denotes the unit step function, and a and β are constants. This system is stable if | |
A. | a is positive and β is positive [Wrong Answer] |
B. | a is negative and β is negative [Wrong Answer] |
C. | a is positive and β is negative [Wrong Answer] |
D. | a is negative and β is positive [Correct Answer] |
View Answer
Explanation:-
Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
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saturation region
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⇒ For a transfer function H(s) = P(s)/Q(s), where P(s) and Q(s) are polynomials in s
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3 bit counter
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TRUE
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are laminated
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may be laminated
must not be laminated
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Half adder
Full adder
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Clocked R-S flip-flop
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They have negative temperature coefficient of resistance
The sensing element is made of sintered ceramics, which are oxides of metals in the form of beads
The variation of resistance with temperature is linear
The resistance value at ambient temperature may range from 100 Ω to 100 kΩ
⇒ The minterm designation for ABCD is
m_{11}
m_{13}
m_{15}
m_{16}
⇒ If operator 'a' = 1 ∠120° then (1 + a) =
-a
-a^{2}
a
-1
⇒ Which of the following bridges is also used in an oscillator?
Maxwell
Schering
Hay
Wien
⇒ The sign of a floating point number depends on
only the sign of mantissa
only the sign of exponent
the sign of both mantissa and exponent
either (a) or (b)
⇒ Consider the transmission line of length 37.5 cm, which is terminated into zero resistance. This line is being exited by a source of 1 GHz which has an internal impedance of 50 Ω. What is the input impedance of the line as seen by the source?
50 Ω
Zero Ω
100 Ω
Infinite Ω
⇒ For the system in the given figure. The transfer function C(s)/R(s
G_{1} + G_{2} + 1
G_{1} G_{2} + 1
G_{1} G_{2} + G_{2} + 1
G_{1} G_{2} + G_{1} + 1
⇒ An interrupt in which the external device supplies its address as well as the interrupt is known as
vectored interrupt
maskable interrupt
polled interrupt
non-maskable interrupt
⇒ Which of the following output configurations are available in a TTL gate?
- Open collector output
- Totem pole output
- Tristate output
1 only
1 and 2 only
2 and 3 only
1, 2 and 3
⇒ The gain margin for a stable system
has a positive decibel value
has a negative decibel value
has a large negative decibel value
none of the above
⇒ Which one of the following is correct?
RAM is a volatile memory but ROM is non-volatile memory
RAM is non-volatile memory but ROM is volatile memory
Both ROM and RAM are volatile but in ROM data is not lost when power is switched off
Both ROM and RAM are non-volatile but in RAM data is lost when power is switched off
⇒ The AM, PM, and TV broadcast frequencies are
of the same order as microwave range
much lower than microwave range
much higher than microwave range
either (a) or (c)