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Q1. | For a transfer function the coefficients of the numerator and denominator polynomials in s must be real. |

A. | TRUE [Correct Answer] |

B. | FALSE [Wrong Answer] |

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

⇒ Push pull amplifier is

voltage amplifier

current amplifier

power amplifier

none of the above

⇒ As temperature increases the forbidden gap in silicon increases.

TRUE

FALSE

⇒ ALU processes

decimal numbers

binary numbers

hexadecimal numbers

all of the above

⇒ Consider a loss less antenna with a directive gain of + 6 dB. If 1 mW of power is fed to it the total power radiated by the antenna will be

4 mW

1 mW

7 mW

1/4 mW

⇒ Many compounds also exhibit semiconducting properties.

TRUE

FALSE

⇒ For a semiconductor, the conductivity is a function of the products of the number of charge carriers and their mobilites. As result, if the temperature of a slab of intrinsic silicon increases, how does its conductivity vary?

Decreases

Increases

Remains unaffected

Increases or decreases depending upon the rise in temperature

⇒ In a bipolar transistor at room temperature if the emitter current is doubled the voltage across its base emitter junction

doubles

halves

increase by about 20 mV

decrease by about 20 mV

⇒ Material which lack permanent magnetic dipoles are known as

paramagnetic

diamagnetic

ferromagnetic

ferrimagnetic

⇒ The electric field in a TWT due to applied signal

is directed along the helix axis

is directed radially from helix axis

is inclined to the helix axis by about 60°

is inclined to the helix axis by about 45°

⇒ The no. of FF required and the maximum decimal no. of a MOD-12 counter is

12, 12

4, 11

3, 6

4, 10

⇒

Match the following:

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

A. | Continuous and aperiodic | 1. | Fourier representation is continuous and aperiodic |

B. | Continuous and Periodic | 2. | Fourier representation is discrete and aperiodic |

C. | Discrete and aperiodic | 3. | Fourier representation is continuous and periodic |

D. | Discrete and periodic | 4. | Fourier representation is discrete and periodic |

A-3, B-2, C-4, D-1

A-1, B-3, C-2, D-4

A-1, B-2, C-3, D-4

A-2, B-1, C-4, D-3

⇒ AM-SC stands for

Amplitude Modulated-Suppressed Carrier

Amplitude Modulated-Single Carrier

Amplitude Modulated-Synchronous Carrier

Amplitude Modulated-Self Carrier

⇒ In a JK flip-flop, J is connected to Q and K is connected to Q outputs. The JK FF converts into a

RS FF

D FF

T FF

Clocked RS FF

⇒ In 8085 microprocessor, what is the length of Data Buffer Register?

6 bits

8 bits

12 bits

16 bits

⇒ A directional coupler is used to determine

r

_{v}

r

_{v}and VSWR

L and C

wave velocity

⇒ Consider the following stateme

1, 2 and 3

1 and 2 only

2 and 3 only

3 and 4 only

⇒ A rectangular waveguide having TE

_{10}mode as dominant mode is having a cut off frequency of 18 GHz for the TE

_{30}mode. The inner broad wall dimension of the rectangular waveguide is

5/3 cm

5 cm

5/2 cm

10 cm

⇒ In an

*n*-

*p*-

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holes

both holes and electrons

either holes or electrons

⇒ The radiation resistance of a doublet antenna of length dl is proportional to

δ

*l*

(δ

*l*)

^{2}

(δ

*l*)

^{3}

(δ

*l*)

^{05}

⇒ Measurement of Hall coefficient enables the determination of

mobility of charge carriers

type of the conductivity and concentration of charge carriers

temperature coefficient and thermal conductivity

fermi level and forbidden energy gap

⇒ In a digital measuring device the input electrical signal is in the frequency range of dc to ac (50) Hz. It must be sampled at a rate of

*f*times/sec

0.5

*f*times/sec

0.25

*f*times/sec

2

*f*times/sec

⇒ Which of the following circuits can be used as parallel-to-series converter?

Digital counter

Decoder

Demultiplexer

Multiplexer

⇒ Which of the following statements is non-executable in FORTRAN 77?

DO

ASSIGN

END

DIMENSION

⇒ FORTRAN expression for 3

*b*

^{2}-5

*a*

^{2}is

SQRT (3 * B ** 2 - 5 * A ** 2)

SQRT 3 * B ** 2 - 5 * A ** 2

SQRT (3 * b ** 2 - 5 * a ** 2)

SQRT (3 * B ** 2) - SQRT (5 * A **2)

⇒ Consider the following

- Maximum energy of electrons liberated photoelectrically is independent of light intensity
- Maximum energy of electrons liberated photoelectrically varies nonlinearly with frequency of incident light.

(1) is true and (2) is false

(1) and (2) both are true

(1) is false and (2) is true

(1) and (2) both are false

⇒ The seven bit Hamming code received is 0010001. If even parity has been used, the correct code is

10001

1110001

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⇒ Terra-watt is equal to

10

^{3}W

10

^{6}W

10

^{9}W

10

^{12}W

⇒ The direction of pick up in a CD is

linear from centre towards edge

linear from edge to centre

nonlinear from centre to edge

nonlinear from edge to center

⇒ The use of thermocouple meters for ac measurement leads to a scale which is

linear

square law

logarithmic

exponential

⇒ The ratio of active power to apparent power is known as __________ factor.

power

load

form

demand