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Q1. | The inverse response of a system h(n) = a∪(^{n}n) what is the condition for the system to be BIBO stable? |

A. | a is real and +ve [Wrong Answer] |

B. | a is real and -ve [Wrong Answer] |

C. | |a| > 1 [Correct Answer] |

D. | |a| < 1 [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ The frequency at which the piezoelectric effect occurs is primarily determined by

the weight of the crystal

thickness of the crystal

length of the crystal

gain structure of the crystal

⇒ If transmission bandwidth is doubled in FM, SNR is

doubled

raised four times

decreased four times

halved

⇒ Zoning is used with a dielectric antenna in order to

permit pin-point focusing

reduce the bulk of the lens

increase the bandwidth of the lens

correct the curvature of the wavefront from a horn that is too short

⇒ Which one of the following statements is correct for MOSFETS?

p channel MOS is easier to produce than n channel MOS

n channel MOS must have twice the area of p channel MOS for the same ON resistance

p channel MOS has faster switching action than n channel MOS

p channel MOS has higher packing density than n channel MOS

⇒ A 0-200 V voltmeter has a sensitivity of 1 kΩ per volt. The resistance of voltmeter is

1 kΩ

200 kΩ

100 kΩ

50 kΩ

⇒ In a tape recorder

both record and erase heads have high permeability core

the record head has high permeability core but the erase head has low permeability core

the record head has low permeability core but the erase head has high permeability core

both record and erase heads have low permeability core

⇒ Which interrupts are masked?

5.5

6.5

7.5

None

⇒ The diffusion current is proportional to

applied electric field

concentration gradient of charge carrier

square of the electric field

cube of the applied electric field

⇒ The number of switching functions of 3 variables are

3

8

16

32

⇒ If F(

*j*ω) is the Fourier transform of

*f*(

*t*), then

£

*f*(-

*t*) = F(

*j*ω)

£

*f*(-

*t*) = F* (

*j*ω)

£

*f*(-

*t*) = F(-

*j*ω)

£

*f*(-

*t*) = F* (

*- j*ω)

⇒ It is desired to design a phase shift oscillator using an FET having a

*g*= 5000 μSiemen,

_{m}*r*= 40

_{d}*k*Ω and feedback circuit value of R = 10 K. Then value of C for oscillator operation at 1

*k*H

*z*and that of

*R*for A = 40 to ensure oscillator action are

_{D}6.4

*n*F, 80 K

6.5

*n*F, 10 K

6.5

*p*F, 10 K

65

*p*F, 80 K

⇒ TTL circuit with active pull up is preferred because of its suitability for

wired AND operation

bus operated system

wired logic operation

reasonable dissipation and speed of operation

⇒ The slope of log-magnitude asymptote changes by - 40 dB/ decade at a frequency ω

_{1}. This means that

a double pole is present

a pair of complex conjugate poles is present

either a double pole or a pair of complex conjugate poles is present

a pole or zero at origin is present

⇒ Feedback factor may be less or more than 1.

TRUE

FALSE

⇒ Henry is equivalent to

Volts/Ampere

Weber/Volt

Weber/Ampere

Weber/Ampere

^{2}

⇒ In FM 'guard band' is provided

to limit upper frequency limit

to limit lower frequency limit

so that there is less adjacent channel interference

to limit transmitted power of a station

⇒ A voltage wave having 5% fifth harmonic content is applied to a series RC circuit. The percentage fifth harmonic content in the current wave will be

0.05

more than 5%

less than 5%

equal or more than 5%

⇒ In a C expression using assignment operators, relational operators and arithmetic operators, the hierarchy of operations (in the absence of parenthesis) is

assignment, relational, arithmetic

relational, assignment, arithmetic

arithmetic, assignment, relational

arithmetic, relational, assignment

⇒ An electron (charge -

*e*) is rotating in a circular orbit of radius R, around a proton with charge +

*e*at a constant angular velocity ω. The orbital magnetic dipole moment is

0.5

*e*ω R

^{2}

*e*ω R

^{2}

2

*e*ω R

^{2}

0.5

*e*ω R

^{3}

⇒ In molecules of ionic crystals, orientation polarization is zero.

TRUE

FALSE

⇒

Match the following:

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

A. | Poles and zeros of lie an real axis driving point LC network | 1. | lie an real axis |

B. | Canonic LC network has | 2. | a zero |

C. | The number of Canonic networks for the given driving point function | 3. | minimum number of elements |

D. | The first critical frequency nearest the origin for RL driving point impedance | 4. | four |

5. | minimum number of elements | ||

6. | alternate | ||

7. | either a pole or zero | ||

8. | three |

A-1, B-5, C-8, D-7

A-6, B-5, C-3, D-2

A-1, B-5, C-4, D-2

A-1, B-3, C-4, D-7

⇒ As the reverse voltage is increased, the depletion layer

becomes narrow

widens

remains the same

reduce to zero

⇒ A full wave rectifier circuit using centre tapped transformer, the input frequency 50 Hz. The frequency of output is

100 Hz

50 Hz

25 Hz

none of the above

⇒ The voltage gains of an amplifier without feedback and with negative feedback respectively are 100 and 20. The percentage of negative feedback (β) would be

0.4

0.05

0.2

0.8

⇒ Which of the amplifier circuits using junction transistors has the best gain?

Common emitter

Common base

Common collector

All above has the same gain

⇒ The term efficacy, is defined by

same as efficiency

measure of the ability of a device to produce a desired effect

input/output

(efficiency)

^{2}

⇒ Which of the following identifiers is invalid in Pascal?

` BETA`

`MAX 40`

`2ND`

`A MAX`

⇒ Consider the following statements

- ECL has least propagation delay
- TTL has largest fan out
- CMOS has highest noise margin
- TTL has lowest power dissipation

1 and 3

2 and 4

3 and 4

1 and 2

⇒ An electromagnetic wave can be completely guided by a dielectric rod or slab.

TRUE

FALSE

⇒ A line has standing waves with a voltage maximum of 35 mV and minimum of 17.5 mV VSWR is

2

4

0.5

0.25