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Q1. | Nyquist stability criterion is based on a theorem from the theory of complex variables. |

A. | TRUE [Correct Answer] |

B. | FALSE [Wrong Answer] |

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

⇒ In the given figure

*x*

_{6de(ax1 + bx2 + cx3)(a + b + c) (x1 + x2 + x3) (d + e)(ax1 + bx2 + cx3) (d + e)a b c d e (x1 + x2 + x3)}

⇒ In figure, E = 1 V (rms value). The average power is 250 mW. Then phase angle between E and

90°

60°

45°

30°

⇒ For the system in the given figure, the gain margi

0

low

+ ∞

none of the above

⇒ The natural frequency S

_{n}of the given circui

-1

1

42737

-2

⇒ A 3 phase induction motor is controlled by voltage and frequency control such that the ratio V/

*f*is constant. At 50 Hz, the speed is 1440 rpm. At 25 Hz, the speed is likely to be

about 1350 rpm

about 720 rpm

about 360 rpm

either (b) or (c)

⇒

**Assertion (A):** 1C 74181 is an ALU in TTL 7400 series.

**Reason (R):** 1C 74181 can accept two 4 bit words and can perform any one of possible 16 arithmetic or logic operations.

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not correct explanation of A

A is correct R is wrong

A is wrong R is correct

⇒ The value of VSWR is taken as ∞ when the line is

short-circuited

open-circuited

terminated with full load

terminated with load equal to the characteristic impedance of the load

⇒ A 10 MHz square wave clocks 5 bit ripple counter. The frequency of the 3rd FF output is

2 MHz

1.25 MHz

50 MHz

615 kHz

⇒ When a CE transistor is cut off

voltage across collector reduces to zero

voltage across collector is maximum

maximum collector current flows

maximum voltage appears across the load resistance

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | bit | 1. | 10 |

B. | nat | 2. | e |

C. | decit | 3. | 2 |

A-1, B-2, C-3

A-1, B-3, C-2

A-3, B-2, C-1

A-2, B-3, C-1

⇒ Speeds of sound and radio waves are equal.

TRUE

FALSE

⇒

**Assertion (A):** Laplace transform can be used to evalute integrals.

**Reason (R):** Laplace transform can be used to solve differential equations.

Both A and R are correct and R is correct explanation of A

Both A and R are correct but R is not correct explanation of A

A is true, R is false

A is false, R is true

⇒ For measuring inductance with high

*Q*, we should use

Maxwell's bridge

Maxwell Wien bridge

Hay's bridge

Either (a) or (b)

⇒ The four types of integers in Java are called

byte, short, int and long

bit, byte, short and long

nibble, byte, short and long

nibble, byte, int and long

⇒ In Z

_{RC}(

*s*) has a pole at

*s*= 0, the first element in second Foster realization is

R

C

R and C in series

R and C in parallel

⇒ In the switching circuit, switches A, B have value 0 for OFF, 1 for ON and the output Y has 0 volts for 1 volts, then the expression for

AB

A + B

A + B

AB

⇒ For the transport lag G(

*j*ω) =

*e*

^{-jωT}, the magnitude is always equal to

0

1

10

0.5

⇒ For an ideal 3000 Hz channel, Nyquist rate is

3000 bps

6000 bps

9000 bps

12000 bps

⇒ Identical telephone numbers in different parts of a country are distinguished by their

area codes

office codes

access digits

language codes

⇒ The power rating of radio transmitters is around

100 mW

10 W

10 kW

10 MW

⇒ CCIR system B employs

625 lines

625 lines with 2 : 1 interlace

625 lines with 4 : 1 interlace

500 lines with 2 : 1 interlace

⇒ Which of the following is not an omnidirectional antenna?

Log periodic

Half-wave dipole

Discone

Marconi

⇒ In a purely resistive circuit the instantaneous power varies from zero to maximum twice in each cycle.

TRUE

FALSE

⇒ A five bit binary adder is used to add 01001 and 00111. The adders from LSB position are numbered as FA

_{0}, FA

_{1}, FA

_{2}and FA

_{3}. The outputs of FA

_{2}are

SUM = 0

SUM = 0, CARRY = 1

SUM = 1, CARRY = 0

SUM = 1, CARRY = 1

⇒ The phase angle curve of G(

*j*ω) H(

*j*ω) can be drawn

by adding the phase angle curves of individual factors

by subtracting the phase angle curves of individual factors

by multiplying the phase angle curves of individual factors

by dividing the phase angle curves of individual factors

⇒ 100101

_{2}is equal to decimal number

47

37

21

17

⇒ In microwave system the function of mode filter is

to suppress modes with lower cut off frequencies

to suppress modes with higher cut off frequencies

to change mode of wave transmission

both (b) and (c)

⇒ A series RC circuit has fixed R and C and variable

*f*. The current locus will lie in the first quadrant.

TRUE

FALSE

⇒ In terms of signum function

*sgn*(

*t*), unit step function

*u*(

*t*) =

1 +

*sgn*(

*t*)

1 -

*sgn*(

*t*)

0.5 + 0.5

*sgn*(

*t*)

0.5 - 0.5

*sgn*(

*t*)

⇒ Capacitance hats are installed on low frequency antenna is

increase the electrical length

reduce the electrical length

protect against lightening

protect against corona effects