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Q1. | A system has its two poles on the negative real axis and one pair of poles lies on jω axis. The system is |

A. | stable [Wrong Answer] |

B. | unstable [Wrong Answer] |

C. | limitedly stable [Correct Answer] |

D. | either (a) or (c) [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ In a three cavity klystron amplifier, the oscillations are excited in

input cavity

output cavity

intermediate cavity

both (a) and (b)

⇒ The

*r*

_{e}model equivalent circuit shown in figure is

CE amplifier

CC amplifier

CB amplifier

None of the above

⇒ The F.T. of a conjugate symmetric function is always

imaginary

real

conjugate Unsymmetric

conjugate symmetric

⇒ Z = _______

*C*[

*A*(B + C) +

*D*]

(

*A*B +

*A*C +

*D*)

(

*CA*+

*A*C +

*D*)

none of these

⇒ Frequency range for satellite communication is

1 kHz to 100 kHz

100 kHz to 10 MHz

10 MHz to 100 MHz

1 GHz to 30 GHz

⇒ A half wave diode rectifier and full wave diode bridge rectifier both have an input frequency of 50 Hz. The frequencies of outputs respectively are

100 Hz and 50 Hz

50 Hz and 100 Hz

100 Hz each

50 Hz each

⇒ Automatic sensitivity control by target voltage control is easily possible in

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New vicon

both (b) and (c)

⇒ A three stage telephone switching structure is to have 128 input and 128 output terminals. It has been found that at peak time the utilization probability is 0.1. The number of intermediate links required for non-blocking configuration is 15. If the actual number of intermediate links is 5, the probability of blocking of call is

0.01

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0.002

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⇒ Consider a Binary Symmetric Channel (BSC) with probability of error being

*p*. To transmit a bit, say 1, we transmit a sequence of three 1 s. The receiver will interpret the received sequence to represent 1 if at least two bits are 1. The probability that the transmitted bit will be received in error is

*p*

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*p*

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*p*

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⇒ In a ballistic galvanometer, a charge of 100 μC gives a first swing of 25°. The charge required to cause first swing of 50° is

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400 μC

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⇒ Consider the following statements:

- The positiveness of coefficients of characteristic equation is necessary as well as sufficient condition for stability of first and second order systems.
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only 1 is correct

both 1 and 2 are correct

only 2 is correct

both are wrong

⇒ De Sauty bridge is very widely used due to

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perfect balance for imperfect capacitor

perfect balance for air capacitors

maximum sensitivity

⇒ A network is said to be two port network if there is

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1, 2, 3

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⇒ At FM demodulator output noise power density

increases with frequency

decreases with frequency

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none of the above

⇒ An amplifier with resistive -

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will be stable for all frequencies

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⇒ The resistance of a photoconductor

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decreases with increase in light intensity

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remains constant

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6

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4

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two, three

three, four

four, six

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A

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all coefficients are negative

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more than 180° but less than 270°

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1, 2 and 3

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2 and 3 only

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⇒ Tropospheric scatter propagation is not subject to any fading.

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⇒ To cover all inhabited regions of the Earth, the number of geosynchronous communication satellites required

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3

10

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⇒ Which of the following directives in 8085 causes one byte to be reserved in the memory?

D S

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⇒ In the amplifier circuit figure the quiescent point voltage and current

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10 V, 2 mA

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