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Q1. | The direction in a Yagi Uda antenna is longer than the radiating element. |

A. | TRUE [Wrong Answer] |

B. | FALSE [Correct Answer] |

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

⇒ An ac circuit has an impedance of (3 +

*j*6) ohm for fundamental. The impedance for fifth harmonic is

(15 +

*j*30) Ω

(15 +

*j*6) Ω

(3 +

*j*30) Ω

(3 +

*j*1.2) Ω

⇒ In a radio receiver, the local oscillator is tuned to a frequency

lower than the incoming frequency

higher than the incoming frequency

equal to incoming frequency

any of the above

⇒ In figure the rms valu

5

2.5

2.5

50

⇒ The

*h*parameter equivalent to ac resistance

*r*

_{e}is

*h*

_{ib}

*h*

_{fe}

*h*

_{ob}

*h*

_{rb}

⇒ When time constant T in any factor is varied, the shapes of log magnitude and phase angle curves remain the same.

TRUE

FALSE

⇒ In which frequency range is the noise figure in a transistor independent of frequency

intermediate frequencies

high frequency

low frequencies

both low and high frequencies

⇒ The line of sight communication requires the transmit and receive antennas to face each other. If the transmit antenna is vertically polarized, for best reception to the receive antenna should be

horizontally polarized

vertically polarized

at 45° within respect to horizontal polarization

at 45° with respect to vertical polarization

⇒ The image frequency of a superheterodyne receiver is

independent of the frequency at which the receiver is tuned

always outside the operating range of the receiver

typical to FM receivers only

not rejected by the IF tuned circuits

⇒ The sum of 1110101

_{2}and 11011

_{2}in decimal form will be

65

75

85

95

⇒ With the switch in STOP position, Y will be equa

0

1

CLK

none of these

⇒ The equivalent inductance measured between the terminals 1 and 2 for the circuit shown in the figur

L

_{1}+ L

_{2}+ M

L

_{1}+ L

_{2}- M

L

_{1}+ L

_{2}+ 2M

L

_{1}+ L

_{2}- 2M

⇒ Even at room temperature, an intrinsic semiconductor has some holes. These holes are due to

electron

doping

thermal energy

free electrons

⇒ Consider the following program for 8085

`OACH`

`53 H`

`OADH`

`54 H`

⇒ The open loop frequency response of a unity feed back system is as u

20 dB and 15°

20 dB and 25°

6 dB and 15°

6 dB and 25°

⇒ An

*m*derived low pass filter has

*f*

_{c}= 1000 Hz and

*m*= 0.6. This filter will have infinite attenuation at

*f*= 1250 Hz

all frequencies above 1000 Hz

*f*= 1562.5 Hz

*f*= 1666.67 Hz

⇒ The minimum height of outer atmosphere is

100 km

150 km

200 km

400 km

⇒ In VHS format each video head is tilted from azimuth by

20°

10°

6°

1°

⇒ An angle modulated signal is expressed by

*f*(

_{a}*t*) = cos (2 x 10

^{8}p

*t*) + 75 sin (2 x 10

^{3}p

*t*). The peak frequency deviation of the carrier is

1 kHz

7.5 kHz

75 kHz

100 MHz

⇒ Four terminal approach is used in measuring low resistance because it

eliminates thermoelectric energy

eliminates stray capacitance

eliminates stray inductance

eliminates the effect of leads and contacts

⇒

Match the following:

List I (Logic) | List II (Characteristic) | ||
---|---|---|---|

A. | RTL | 1. | High fan out |

B. | CMOS | 2. | Highest speed of operation |

C. | I^{2}L | 3. | High noise immunity |

D. | ECL | 4. | Lowest product of power and delay |

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

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

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

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

⇒ One electron volt is equivalent to

1.6 x 10

^{-10}joule

1.6 x 10

^{-13}joule

1.6 x 10

^{-16}joule

1.6 x 10

^{-19}joule

⇒ Which of these are two state devices?

Lamp

Punched card

Magnetic tape

All of the above

⇒ To evaluate X = (A + B + 1.2) * (A + B - C) the sequence of operation is

+ + + - * =

* + + + - =

+ + - * + =

- + + + * =

⇒ The phase velocity in a coaxial line is

greater than C

equal to C

less than C

not depend on C

⇒

Match the following:

List I (Operator) | List II (Description) | ||
---|---|---|---|

A. | ? : | 1. | Modulus |

B. | [ ] | 2. | Array expression |

C. | % | 3. | Conditional |

A-3, B-2, C-1

A-1, B-2, C-3

A-1, B-3, C-2

A-2, B-3, C-1

⇒ A parallel connection of circuit is at below resonance circuit behave as

RC circuit

RL

RLC

resistive only

⇒ If A = 131 ± 4 and B = 106 ± 4, the percentage range of doubt in A - B is

0.04

0.08

0.16

0.32

⇒ In anti-ferromagnetic materials, the graph of susceptibility versus temperature shows a sharp maximum at a certain temperature. This temperature is known as

Curie temperature

Neel temperature

Weiss temperature

Bitter temperature

⇒ The poles of an RC function

are simple and lie on

*j*ω axis

are simple and lie on negative real axis

may be complex conjugate

may be anywhere in

*s*plane

⇒ System

causal

stable

non causal

anticausal