Related Questions

Tropospheric scatter is used with frequencies in the
A HF
B VHF
C UHF
D VLF
All legislative subject are mentioned in three lists union list, concurrent list and state list. Any subject is not mentioned in all three list, the law on that particular subject can be framed by-
A Parliament only
B State Legislature only
C 1 and 2
D Neither 1 nor 2
Which one of the following statements with regard to Jet stream, an upper level tropospheric wave, is not correct?
A It is narrow band of high-velocity wind.
B It\ \follows\ \the\ \wave\ \path\ \near\ \the tropopause at elevations of 8 km to 15 km.
C Jet\ streams\ are typically\ continuous over long distances.
D In summer, the polar front jet achieves its maximum force.
A,B,C,D,E,G and I are seven friends who study in three different standards namely 5th, 6th and 7th such that not less than two friends study in the same standard. Each friend also has a different favorite subject namely History, Civics, English, Bangla, Science , Maths , and Economics but not necessarily in the same order. A likes Maths and studies in the 5th standard with only one other friend who likes Bangla. I studies with tow other friends . Both the friends who study with I like languages (Here languages include only Science , English and Bangla ) . D studies in the 6th standard with only one person and does not like Civics . E studies with only one friend . The one who likes history does not study in 5th or 6th standard . E does not like languages. C does not like English , Science or Civics. Which combination represents E's favorite subject and the standard in which he studies?
A Civics and 7th
B Economics and 5th
C Civics and 6th
D History and 7th
The closest meaning of "Scatter" is---
A Disperse
B Moist
C Trust
D Damp
It is found that a ship to ship communication suffers from fading. This can be avoided by using
A Space diversity
B Frequency diversity
C Broad band antenna
D Directional antenna
In microwave communication links, when fading due to rain attenuation occurs then technique adopted for solving the problem would include
A Antenna replacement and feed correction
B Amplitude timing and phase correction
C Polarization shifting and code diversity
D Path diversity and frequency diversity
Rainfall is an important factor for fading of radio waves at frequencies above
A 10 GHz
B 100 GHz
C 1 GHz
D 100 MHz
Which causes multipath or frequency selective fading?
A Small reflector
B Nearer reflector
C Further reflector
D Large reflector
In an examination 75% of the students passed in mathematics, 45% passed in general science and 30% passed in both subject. What per cent of the students have failed in both subject?
A 35
B 25
C 10
D 15

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