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Q1. | Which antenna is a wideband antenna? |

A. | Hertz antenna [Wrong Answer] |

B. | Marconi antenna [Wrong Answer] |

C. | Folded dipole [Correct Answer] |

D. | None of the above [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 :**

⇒ A broadcast radio transmitter radiates 5 kW when the modulation percentage is 60. How much of this is carrier power?

6.66 kW

5 kW

4.9 kW

4.23 kW

⇒ The output wave of a cycloconverter consists of a number of segments derived from the input wave.

TRUE

FALSE

⇒ 1011

_{2}x 101

_{2}= __________

_{10}

55

45

35

25

⇒ For a second order system the damping factor is varied from 0 to 1. The locus of poles is

a straight line on imaginary axis

a straight line on real axis

a semi circle

a circle

⇒ It is required to measure angular position. Out of the transducers

- Circular potentiometer
- LVDT
- E pick up
- Synchro

1, 2, 3, 4

2 and 3

1, 2, 4

1 and 4

⇒ V

_{th}= 0, if

there is no independent source in circuit

there is no dependent source in circuit

voltage source of infinite magnitude

none

⇒ The different access methods which permit many satellite users to operate in parallel through a single transponder without interfering with each other as

Frequency Division Multiple Access (FDMA)

Time Division Multiple Access (TDMA)

Code Division Multiple Access (CDMA)

All of the above

⇒ In the given figure the reflected current wave after first reflectio

0.18 A

-0.18 A

0.3 A

-0.3 A

⇒ The most commonly used semiconductor material is

silicon

germanium

mixture of silicon and germanium

none of the above

⇒ Which one most appropriate dynamic system?

*y*(

*n*) +

*y*(

*n*- 1) +

*y*(

*n*+ 1)

*y*(

*n*) +

*y*(

*n*- 1)

*y*(

*n*) =

*x*(

*n*)

*y*(

*n*) +

*y*(

*n*- 1) +

*y*(

*n*+ 3) = 0

⇒ In the fabrication of n-p-n transistor in an IC, the buried layer on the P-type substrate is

P

^{+}-doped

n

^{+}-doped

used to reduce the parasitic capacitance

located in the emitter region

⇒ In a rectangular waveguide cutoff wavelength for TE

_{10 }mode is 8 cm. Then cutoff wavelength for TE

_{20}mode is

8 cm

6 cm

4 cm

2 cm

⇒ As regards ferromagnetic Curie temperature Q

*and paramagnetic curie temperature θ*

_{f}Q

*> θ*

_{f}θ > Q

_{f}θ equal to or less than Q

_{f}θ may be equal to less than or more Q

_{f}⇒ If

*f*(

_{h}*t*) is the Hilbert transform of

*f*(

*t*), and

*f*(

*t*) is a real valued signal, the pre-envelope of

*f*(

*t*) is

*f*(

*t*) -

*jf*(

_{h}*t*)

*f*(

*t*) +

*jf*(

_{h}*t*)

*f*(

_{h}*t*) +

*jf*(

*t*)

*f*(

_{h}*t*) -

*jf*(

*t*)

⇒ Which binary addition is incorrect?

1001.1 + 1011.01 = 10100.11

100010 + 1000101 = 1001010

0.0011 + 0.1110 = 1.1

1011.01 + 1001.11 = 10111

⇒ In a single stage differential amplifier, the output offset voltage is basically dependent on the mismatch of

V

_{BE}, I

_{B}and β

V

_{BE}and I

_{B}

I

_{B}and β

V

_{BE}and β

⇒ What is the characteristic of a good control system?

Sensitive to parameter variation

Insensitive to input command

Neither sensitive to parameter variation nor sensitive to input commands

Insensitive to parameter variation but sensitive to input commands

⇒ Which of the following statement about JFET is correct?

In an N-channel JFET, the channel is the narrowest under zero gate bias condition

In a JFET the gates are always forward biased

In a JFET, gate-source cut off voltage is numerically equal to the pinch off voltage

It is a voltage controlled device

⇒ Double integration of a unit step function would lead to

an impulse

a parabola

a ramp

a doublet

⇒ What does the operator ( ) mean in C?

Function expression

Array expression

Structure operator

Increment / Decrement

⇒ If the absolute value of a number is less than decimal 1, the sign of exponent in floating point representation is

zero

negative

zero or negative

positive

⇒ A discrete time linear shift-invariant system has an impulse response

*h*[

*n*] with

*h*[0] = 1, h[1] = - 1,

*h*[2] - 2, and zero otherwise. The system is given an input sequence

*x*[

*n*] with

*x*[0] -

*x*[2] - 1, and zero otherwise. The number of nonzero samples in the output sequence

*y*[

*n*], and the value of

*y*[2] are, respectively

5, 2

6, 2

6, 1

5, 3

⇒ If the circumference of a spherical target is between 1 to 10 wavelength in a radar system, the situation is called

resonance region

Rayleigh region

optical region

binomial region

⇒

**Assertion (A):** A class C amplifier can also be used as frequency multiplier

**Reason (R):** When narrow current pulses drive a resonant circuit the output can be a near perfect sine wave

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

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

A is correct R is wrong

A is wrong R is correct

⇒ Evaluate the value of 2 [

*u*(

*t*- 1) -

*u*(1 - 2

*t*)] (

*u*(

*t*+ 1) +

*u*(

*t*)) at

*t*= 3 sec.

0

4

∞

1

⇒ A Karnaugh map with 4 variables has

2 cells

4 cells

8 cells

16 cells

⇒ In a network

Number of links = Number of branches - number of nodes + 1

Number of links = Number of branches - number of nodes

Number of links = Number of branches - number of nodes - 1

Number of links = Number of branches - number of nodes - 2

⇒ The transformer cores operating at microwave frequency ranges are generally made up of

silicon steel

ferrites

albino

super alloy

⇒ With respect to the Miller integrator sweep shown below, the sweep rate wil

2

4

1.5

2.5

⇒ A logical expression Y = A + AB is equal to

Y = AB

Y = AB

Y = A + B

Y = A + B