InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The frequency of a FM transmitter without signal input is calledA. Lower side b and frequencyB. Upper side b and frequencyC. Resting frequencyD. None of these |
| Answer» Correct Answer - c | |
| 2. |
If `mu` and `mu_(2)` are the refractive indices of the materials of core and cladding of an optical fibre, then loss of light due to its leakage can be minimised by havingA. `mu_(1)gtmu_(2)`B. `mu_(1)ltmu_(2)`C. `mu_(1)=mu_(2)`D. None of these |
| Answer» Correct Answer - a | |
| 3. |
The characteristic impedance of a coaxial cable is of the order ofA. `50Omega`B. `200Omega`C. `270Omega`D. None of these |
| Answer» Correct Answer - c | |
| 4. |
Television signal on earth cannot be recevied at distances greater than `100 km` from the transmission station. The reasion behind this is thatA. The recevier antenna is unable to detect the signal a distance greater than `100 km`B. The `TV` programme conists of both audio and video signelsC. The `TV` signals are less powerful than radio signalsD. The surface of earth is curved like a sphere |
| Answer» Correct Answer - d | |
| 5. |
What type of modulation is employed in india for radio transmissionA. Amplitude modulationB. Frequency modulationC. Pluse modulationD. None of these |
| Answer» Correct Answer - a | |
| 6. |
Long distance radio broadcasts use short wave bands. Explain why?A. Ground waveB. Ionosheric waveC. Direct waveD. Sky wave |
| Answer» Correct Answer - c | |
| 7. |
Show that the radiation pressure exerted by an EM wave of intensity I on a surface kept in vacuum is `I//c`.A. `I_(c)`B. `Ic^(2)`C. `I//c`D. `I//c^(2)` |
| Answer» Correct Answer - c | |
| 8. |
Laser light is considered to be coherent because it consists ofA. Many wavelengthsB. Uncoordinated wave of many wavelengthC. Coordinated wave of many wavelengthsD. Coordinated wave of a particular wavelength |
| Answer» Correct Answer - d | |