Hi students, Welcome to Amans Maths Blogs (AMBIPi). Are you preparing for SSC Scientific Assistant and looking for SSC Scientific Scientific Assistant Electronics 281 to 295 with Answer Keys? In this article, you will get previous year questions of SSC Scientific Assistant IMD (Indian Meteorological Department), which helps you in the preparation of government job of SSC IMD Scientific assistant.
SSC Scientific Assistant IMD Previous Year Questions
Scientific Assistant Electronics Question No: 281
Which of the following are the following advantages of Yagi antenna ?
(i) it has gain to allow lower strength
(ii) the antenna becomes strong for high gain levels
(iii) it can be easily mounted
(iv) it is mechanically relatively straight forward
Option A : (i) , (iii) , and (iv)
Option B : (i) , (ii) and (iv)
Option C : (i) , (iii) and (iv)
Option D : Only (ii)
Show/Hide Answer Key
Option C : (i) , (iii) and (iv)
Scientific Assistant Electronics Question No: 282
The propagation of radio wave signals through reflection from ionosphere is known as ______
Option A : Sky wave propagation
Option B : Ground wave propagation
Option C : Space wave propagation
Option D : Tropospheric wave propagation
Show/Hide Answer Key
Option A : Sky wave propagation
Scientific Assistant Electronics Question No: 283
Which array uses two half wave dipoles spaced along with one-half wavelength apart ?
Option A : Broad-end array
Option B : End-fire array
Option C : Black-fire array
Option D : Binomial array
Show/Hide Answer Key
Option B : End-fire array
Scientific Assistant Electronics Question No: 284
Broadside antenna array is ______ in nature and has ______ gain.
Option A : Unidirectional and low
Option B : Multidirectional and very low
Option C : Bidirectional and high
Option D : Both unidirectional and multidirectional
Show/Hide Answer Key
Option C : Bidirectional and high
Scientific Assistant Electronics Question Paper No: 285
What is the maximum distance up to which the TV transmission can be received if the height of a TV broadcasting tower ids 85 meter ? (Radius of earth = 6,400,000 m)
Option A : 62 km
Option B : 31 km
Option C : 32.98 km
Option D : 30 km
Show/Hide Answer Key
Option C : 32.98 km
Scientific Assistant Electronics Question No: 286
Calculate the radiation resistance of an antenna length λ/8 (λ is the wavelength )
Option A : 10
Option B : 8
Option C : 12.33
Option D : 12.8
Show/Hide Answer Key
Option C : 12.33
Scientific Assistant Electronics Question No: 287
In which of the following the phases of the carrier wave changes in accordance with intensity of light.
Option A : AM
Option B : PM
Option C : FM
Option D : PAM
Show/Hide Answer Key
Option B : PM
Scientific Assistant Electronics Paper No: 288
VSB modulation is termed as ______
Option A : Vestigial side band
Option B : Vertical side band
Option C : Single side band
Option D : Variable side band
Show/Hide Answer Key
Option A : Vestigial Side Band
Scientific Assistant Electronics Question Paper No: 289
Which of the following is/are the advantages of DSB-SC over SSB-SC ?
(I) It has lower power consumption
(II) It needs half of the bandwidth
(III) It is used for transmitting stereo information
(IV) It has two sides brands with no carrier
Option A : (I) only
Option B : (I) , (II) and (IV)
Option C : (I) , (III) and (IV)
Option D : (II) only
Show/Hide Answer Key
Option C : (I) , (III) and (IV)
Previous Year Question Scientific Assistant Electronics: 290
What is the main advantage of parabolic antenna ?
Option A : High directivity
Option B : Wide bandwidth
Option C : Small wavelength
Option D : Low directivity
Show/Hide Answer Key
Option A : High directivity
Scientific Assistant Electronics Question No: 291
For an amplitude modulated wave , he maximum amplitude is found to be 20 V while the minimum amplitude to be 4.5 V. Calculate the modulation index
Option A : 0.62
Option B : 0.67
Option C : 0.26
Option D : 0.632
Show/Hide Answer Key
Option D : 0.632
Scientific Assistant Electronics Question No: 292
Modulation index is generally kept ______ .
Option A : Less than 1
Option B : Greater than 1
Option C : Equal to 1
Option D : 0
Show/Hide Answer Key
Option A : Less than 1
Scientific Assistant Electronics Question No: 293
Which of the following modulations has higher bandwidth among the others ?
Option A : PCM
Option B : DM
Option C : ADM
Option D : DPCM
Show/Hide Answer Key
Option A : PCM
Scientific Assistant Electronics Question No: 294
Encoding technique is selected on the basis of
(i) Efficiency
(ii) Error
(iii) Power level
Option A : only (i)
Option B : only (ii)
Option C : only (iii)
Option D : (i), (ii) , and (iii)
Show/Hide Answer Key
Option D : (i) , (ii) and (iii)
Scientific Assistant Electronics Question Paper No: 295
The current of resonance in RLC series circuit is ______
Option A : Maximum
Option B : Minimum
Option C : Zero
Option D : Infinite
Show/Hide Answer Key
Option A : Maximum
Know About SSC Scientific Assistant: Click Here.
Get SSC Scientific Assistant Previous Year Questions.
| SSC Scientific Assistant Previous Year Questions Bank |
| SSC General Intelligence Previous Year Questions | 1 to 20 | 21 to 40 | 41 to 60 | 61 to 75 |
| SSC General Awareness Previous Year Questions | 1 to 20 | 21 to 40 | 41 to 60 | 61 to 75 |
| SSC Computer Science Previous Year Questions | 1 to 20 | 21 to 40 | 41 to 60 | 61 to 80 | 81 to 100 | 101 to 120 | 121 to 140 | 141 to 160| 161 to 180 | 181 to 200 |
| SSC Quantitative Aptitude Previous Year Questions | 1 to 20 | 21 to 40 | 41 to 60 | 61 to 75 |
| SSC Physics Previous Year Questions | 1 to 20 | 21 to 40 | 41 to 60 | 61 to 80 | 81 to 100 |
| SSC Electronics Previous Year Questions | 1 to 20 | 21 to 40 | 41 to 60 | 61 to 80 | 81 to 100 101 to 120 | 121 to 140 | 141 to 160 | 161 to 180 | 181 to 200 | 201 to 220 | 221 to 240 | 241 to 260 | 261 to 280 | 281 to 295 | |
