Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | The first and the last critical frequencies (singularities) of a driving point impedance function of a passive network having two kind of elements, are a pole and a zero respectively. The above property will be satisfied by |

A. | RL network only [Wrong Answer] |

B. | RC network only [Correct Answer] |

C. | LC network only [Wrong Answer] |

D. | RC as well as RL network [Wrong Answer] |

View Answer
Explanation:-
Answer : BDiscuss 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 :**

⇒ Bus bars are always meant for very heavy currents.

TRUE

FALSE

⇒ A linear time-invariant, causal continuous time system has a rational transfer function with simple poles at

*s*= - 2 and

*s*= - 4, and one simple zero at

*s*= - 1. A unit step

*u*(

*t*) is applied at the input of the system. At steady state, the output has constant value of 1. The impulse response of this system is

[exp (- 2

*t*) + exp (-4

*t*)]

*u*(

*t*)

[-4 exp (- 2

*t*) + 12 exp (-4

*t*) - exp (-

*t*)]

*u*(

*t*)

[-4 exp (- 2

*t*) + 12 exp (-4

*t*)]

*u*(

*t*)

[-0.5 exp (- 2

*t*) + 1.5 exp (-4

*t*)]

*u*(

*t*)

⇒ For any test point

*s*on the real axis, the sum of angular contributions of the complex conjugate poles is

90°

180°

270°

360°

⇒ If temperature increases by about 50°, the resistance of thermistor changes to

half of its initial value

twice of its initial value

eight times of its initial value

one eight of its initial value

⇒ An amplifier operating over a frequency range of 18 to 20 MHz has 10 kΩ input resistance. At a temperature of 27° C, the noise voltage at input of amplifier is (Boltzman constant

*k*= 1.38 x 10

^{-23}J/K)

18.2 μV

182 μV

16.2 μV

162 μV

⇒ When a coil consisting of single turn rotates at a uniform speed in a magnetic field, the induced e.m.f. is

changing

reversing

steady

alternating

⇒ Which of the following stages has no phase inversion of the signal?

Two CE stages

Three CE stages

CE and CC stages

CE stage and emitter follower

⇒ An I/O processor controls the flow of information between

cache memory and I/O devices

main memory and I/O devices

two I/O devices

cache and main memory

⇒ Forbidden energy gap in germanium at 0 K is about

10 eV

5 eV

2 eV

0.78 eV

⇒ Power gain of antenna equals directive gain in VHF and UHF range if and only if efficiency of the antenna is

0.25

0.5

0.75

1

⇒ In the design of a single mode step index optical fiber close to upper cut-off, the single mode operations is NOT preserved if

radius as well as operating wavelength are halved

radius as well as operating wavelength are doubled

radius is halved and operating wavelength is doubled

radius is doubled and operating wavelength is halved

⇒ Following figure is a signal conditioning Amplifier, changes gain depending upon the polarity of V

_{s}. What will be circuit voltage gain for + V

_{s}and for - V

_{s}if D

_{2}is id

A

_{V}= -R

_{3}/R

_{1}

R

_{3}/R

_{1}

R

_{1}/R

_{3}

1 + R

_{3}/R

_{1}

⇒ Find the radiation resistance of an antenna of length λ/10 meter?

8 Ω

780 Ω

7.8 Ω

78 Ω

⇒ The depletion layer around

*p*-

*n*junction in JFET consists of

hole

electron

immobile charges

none of the above

⇒ To make antenna more directional, either its size must be increased or

the number of its feed horns must be increased

the frequency of its transmission must be increased

its effective isotropic radiated power (EIRP) must be increased

its footprint must be increased

⇒ A remote control of TV uses a 10 bit word. The maximum number of total commands it can transmit is

64

256

512

1024

⇒ "Micro-programming" is a technique

for programming the microprocessors

for writing small programs efficiently

for programming the control steps of a computer

for programming output/input

⇒ Bellows converts

pressure difference into displacement

pressure difference into voltage

displacement into pressure difference

either (a) or (c)

⇒ Wood is a diamagnetic material.

TRUE

FALSE

⇒ Which memory requires periodic recharging?

All ROMS

All RAMS

Static RAM

Dynamic RAM

⇒ If

*x*

_{1}(

*t*) = 2 sin p

*t*+ cos 4 p

*t*and

*x*

_{2}(

*t*) = sin 5 p

*t*+ 3 sin 13 p

*t*then

*x*

_{1},

*x*

_{2}both periodic

*x*

_{1}

*x*

_{2}both not periodic

*x*

_{1}periodic,

*x*

_{2}not periodic

*x*

_{1}is not periodic ; but

*x*

_{2}is periodic

⇒

Match the following:

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

A. | T (Reflection coefficient) = 0 | 1. | (Z_{L} - Z_{o})/(Z_{L} + Z_{o}) |

B. | T = - 1 | 2. | Z_{L} = Z_{o} |

C. | T = + 1 | 3. | Z_{L} = 0 |

D. | - 1 < T < + 1 | 4. | Z_{L} = ∞ |

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

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

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

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

⇒ Which variety of copper has the best conductivity?

Pure annealed copper

Hard drawn copper

Induction hardened copper

Copper containing traces of silicon

⇒ In the given figure assume that initially Q = 1 with Clock Pulses being given, the subsequent states of Q wil

1, 0, 1, 0, 1......

0, 0, 0, 0, 0......

1, 1, 1, 1, 1......

0, 1, 0, 1, 0......

⇒ Thyristors are suitable for dc circuit breakers but not for ac circuit breakers.

TRUE

FALSE

⇒ The number of storage classes in C is

2

3

4

6

⇒ In figure V

_{i}may vary from 15 to 20 V and load current may vary from 20 mA to 100 mA. Suitable maximum value of

20 Ω

50 Ω

100 Ω

200 Ω

⇒ The output impedance of an ideal op-amp is

zero

low

high

infinite

⇒ As compared to a BJT amplifier circuit, a JFET amplifier circuit

has low input impedance

has high input impedance

has very low input impedance

may have either low or high input impedance

⇒ The complicated shapes in the polar plots are only due to time constants in the numerator of transfer functions.

TRUE

FALSE