PYQs Based Test - 09 : Communication and Optical Instrumentation

Questions

25

Duration

180 min

Total Marks

38

Negative

−0.25

Topics Covered

Instrumentation Engineering(18)General(7)

Sample Questions from this Test

$An amplitude modulation (AM) scheme uses tone modulation, with modulation index of 0.6. The power efficiency of the AM scheme is _______ % (rounded off to one decimal place)$ View solution & explanation →
$When the movable arm of a Michelson interferometer in vacuum (n = 1) is moved by 325 μm, the number of fringe crossings is 1000. The wavelength of the laser used in nanometers is ____.$ View solution & explanation →
$A sinusoid of 10 kHz is sampled at 15 k samples/s. The resulting signal is passed through an ideal low pass filter (LPF) with cut-off frequency of 25 kHz. The maximum frequency component at the output of the LPF (in kHz) is$ View solution & explanation →

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Test Instructions

The test contains 25 questions and a total of 38 marks.
You will have 180 minutes to complete the test. The timer cannot be paused once started.
Negative marking: 0.25 mark(s) deducted per wrong answer.
Use the question palette to mark questions for review and navigate freely.
Detailed solutions and analytics are available immediately after submission.
This is a free practice test. No login required to attempt.

Frequently Asked Questions

Is PYQs Based Test - 09 : Communication and Optical Instrumentation free?▼

Yes. Every mock test on ExamTest.live is 100% free. You can attempt the full 25-question test without sign-up.

How long is the test?▼

The test runs for 180 minutes. You'll see a live timer once you click Start. The session auto-submits when time runs out.

Are answers and explanations included?▼

Yes. After submission, every question shows the correct answer plus a step-by-step explanation. You can also revisit any question via the result page.

Is there negative marking?▼

Yes. 0.25 mark(s) will be deducted for each incorrect answer. Skipped questions are not penalised.