All Courses
Get the App Signup / Login
Sign in Open App
Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Tests  >  Test: Noise - Electrical Engineering (EE) MCQ

Test: Noise - Electrical Engineering (EE) MCQ


Test Description

10 Questions MCQ Test - Test: Noise

Test: Noise for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Test: Noise questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Noise MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Noise below.
Solutions of Test: Noise questions in English are available as part of our course for Electrical Engineering (EE) & Test: Noise solutions in Hindi for Electrical Engineering (EE) course. Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free. Attempt Test: Noise | 10 questions in 10 minutes | Mock test for Electrical Engineering (EE) preparation | Free important questions MCQ to study for Electrical Engineering (EE) Exam | Download free PDF with solutions
Test: Noise - Question 1
Save

In a receiver the input signal is 100 V, while the internal noise at the input is 10 V. With amplification the output signal is 2 V, while the output noise is 0.4 V. The noise figure of receiver is

Detailed Solution for Test: Noise - Question 1

NF = (100/10)/(2/0.4) or 2.

Test: Noise - Question 2
Save

A receiver is operated at a temperature of 300 K. The transistor used in the receiver have an average output resistance of 1 k. The Johnson noise voltage for a receiver with a bandwidth of 200 kHz is

Detailed Solution for Test: Noise - Question 2

v2 = 4kBTR where symbols have their usual meanings, hence v = 1.8 µV.

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Noise - Question 3
Save

A resistor R  1 k is maintained at 17C. The rms noise voltage generated in a bandwidth of 10 kHz is

Detailed Solution for Test: Noise - Question 3

v2 = 4kBTR where symbols have their usual meanings, hence v = 0.4 µV.

Test: Noise - Question 4
Save

A mixer stage has a noise figure of 20 dB. This mixer stage is preceded by an amplifier which has a noise figure of 9 dB and an available power gain of 15 dB. The overall noise figure referred to the input is
Detailed Solution for Test: Noise - Question 4

The required answer is 7.94 + (100-1)/31.62 = 11.07.

Test: Noise - Question 5
Save

A system has three stage cascaded amplifier each stage having a power gain of 10 dB and noise figure of 6 dB. the overall noise figure is
Detailed Solution for Test: Noise - Question 5

 The gain at each stage is 10db, hence the required answer is 4 + (4-1)/10 + (4-1)/100 or 4.33.

Test: Noise - Question 6
Save

(Q.6-Q.8) An amplifier when used with a source of average noise temperature 60 K, has an average operating noise figure of 5.6.

Q. The Te is
Detailed Solution for Test: Noise - Question 6

The required answer is 60 (5-1) or 240K.

Test: Noise - Question 7
Save

 If the amplifier is sold to engineering public, the noise figure that would be quoted in a catalog is
Detailed Solution for Test: Noise - Question 7

The required answer is 1 + (240/290).

Test: Noise - Question 8
Save

What average operating noise figure results when the amplifier is used with an antenna of temperature 30 K?
Detailed Solution for Test: Noise - Question 8

The required answer is 1 + 240/30 = 9 or 9.54 db.

Test: Noise - Question 9
Save

What is the maximum average effective input noise temperature that an amplifier can have if its average standard noise figure is to not exceed 1.7?
Detailed Solution for Test: Noise - Question 9

The required answer is 290 x (1.7-1) or 203K.

Test: Noise - Question 10
Save

If a matched attenuator with a loss of 3.2 dB is placed between the source and the amplifier’s input, what is the operating spot noise figure of the attenuator amplifier cascade if the attenuator’s physical temperature is 290 K?
Detailed Solution for Test: Noise - Question 10

Here Te is 290[(20.89-1) + (2.089)(7.98-1)] or 4544.4K. Hence the required answer is 1 + 4544.4/290 = 212 or 13.3 db.

Information about Test: Noise Page
In this test you can find the Exam questions for Test: Noise solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Noise, EduRev gives you an ample number of Online tests for practice

Top Courses for Electrical Engineering (EE)

Download as PDF

Top Courses for Electrical Engineering (EE)

Important Questions for Noise

Find all the important questions for Noise at EduRev.Get fully prepared for Noise with EduRev's comprehensive question bank and test resources. Our platform offers a diverse range of question papers covering various topics within the Noise syllabus. Whether you need to review specific subjects or assess your overall readiness, EduRev has you covered. The questions are designed to challenge you and help you gain confidence in tackling the actual exam. Maximize your chances of success by utilizing EduRev's extensive collection of Noise resources.

Noise MCQs with Answers

Prepare for the Noise within the Electrical Engineering (EE) exam with comprehensive MCQs and answers at EduRev. Our platform offers a wide range of practice papers, question papers, and mock tests to familiarize you with the exam pattern and syllabus. Access the best books, study materials, and notes curated by toppers to enhance your preparation. Stay updated with the exam date and receive expert preparation tips and paper analysis. Visit EduRev's official website today and access a wealth of videos and coaching resources to excel in your exam.

Online Tests for Noise

Practice with a wide array of question papers that follow the exam pattern and syllabus. Our platform offers a user-friendly interface, allowing you to track your progress and identify areas for improvement. Access detailed solutions and explanations for each test to enhance your understanding of concepts. With EduRev's Online Tests, you can build confidence, boost your performance, and ace Noise with ease. Join thousands of successful students who have benefited from our trusted online resources.
© EduRev
Education Revolution
Follow Us
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup