Answer & ExplanationOption: [D]
In case of long distance transmission we use amplifier or repeater. An amplifier enhances the strength of input signal. On the otherhand repeaters receives a signal and retransmits the same signal after increasing the power.
| Political Science Mock Test – 42 | Start Test |
| History Test – 190 | Start Test |
| Quantitative Aptitude Test | Start Test! |
| Trigonometry - Mock Test | Start Test! |
| Data Interpretation - Mock Test | Start Test! |
| General Awareness - Mock Test | Start Test! |
| Reasoning Ability - Mock Test | Start Test! |
| Englist(Antonyms) Mock Test 1 | Start Test! |
| Quantitative Aptitude (Percentage) Mock Test | Start Test! |
| Economy Mock Test 1 | Unlock Test! |
| Economy Mock Test 2 | Unlock Test! |
| Economy Mock Test 3 | Unlock Test! |
| Economy Mock Test 4 | Unlock Test! |
| Economy Mock Test 5 | Unlock Test! |
| Books & Authors - Test 2 | Unlock Test! |
