CBSE Class 12 Operation And Maintainence Of Communication Devices Question Paper 2019

Read and download CBSE Class 12 Operation And Maintainence Of Communication Devices Question Paper 2019 designed as per the latest question paper pattern and Class 12 examination guidelines issued by CBSE, NCERT and KVS. The past year Question Papers for Class 12 Other Subjects have been provided with solutions which will help students to assess their performance and find out topics in Other Subjects grade 12 which they need to improve to get better marks in Standard 12 exams. After solving these last year papers also refer to solved Sample Papers for Class 12 Other Subjects available on our website to build strong understanding of the subject

CBSE Class 12 Operation And Maintainence Of Communication Devices Question Paper 2019. Students can download the last year board exams question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.


1. Modulating frequency is

(a) Higher than carrier frequency

(b) Lower than carrier frequency

(c) Equal to carrier frequency

(d) Can have any value

2. In free space, the speed of electromagnetic waves is

(a) 300 metres/second

(b) 3 × 104 metres/second

(c) 1 × 10 metres/second

(d) 3 × 108 metres/second

3. VHF signals propagate through

(a) Ionosphere

(b) Troposphere

(c) Surface of the earth

(d) Waveguide

4. In a cellular mobile system, the shape of the cells is

(a) Circular

(b) Hexagonal

(c) Pentagon

(d) Rectangular

5. A geostationary satellite takes one round of its orbit in

(a) One hour

(b) Four hours

(c) Twelve hours

(d) Twenty-four hours

6. The source of electrical power in a satellite system is

(a) Battery Cells

(b) Generators

(c) Solar Panels 

(d) Fuel Cells

Please click the link below to download pdf file of CBSE Class 12 Operation And Maintainence Of Communication Devices Question Paper 2019.



Click to View or Download pdf file
Click for more Other Subjects Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

FAQs on Policy for Tabulation of Marks for Class 10 Board Exams

ON POLICY Question.1 How CBSE will declare the result of Class-X? Answer. Results of Class X Board will be declared on the basis of an objective criterion developed by the Board vide Notification no.CBSE/CE/2021 dated 01.05.2021. Question.2. If any candidate is not...

CBSE asks schools to load Class 12 Internal Assessment Marks

This has a reference to the letter no CBSE/COORD/2021 dated 11.02.2021 regarding conduct of the School-Based Assessment (Internal Assessment/Practical/ Project) of Class-XII and uploading the marks by 11.06.2021. It has been observed that some schools have not been...

Class 10 Boards Cancelled Class 12 postponed

Looking to the present situation of the pandemic and school closures, and also taking in account the safety and well-being of the students, it is decided as follows:   1. The Board Exams for Class XIIth to be held from May 4th to June, 14th, 2021 are hereby postponed....

Time management for CBSE students

The first thing to learn about Time Management is that time is theoretical so you can’t really manage it. What you do when you get into time management, is that you manage yourself. You decide what has to be done, when it must be done and how to do it in the stipulated...

CBSE Assessment Framework

The Central Board of Secondary Education (CBSE) today, announced a suggested competency-based assessment framework to strengthen India’s existing school education system for secondary level (classes 6-10) and improve the overall learning outcomes of students across...

Studies Today