logo
  • Home
  • Test & Rank
  • About
  • Training
  • Programming
  • CS
  • IT
  • IS
  • ECE
  • EEE
  • EE
  • Civil
  • Mechanical
  • Chemical
  • Metallurgy
  • Instrumentation
  • Aeronautical
  • Aerospace
  • Biotechnology
  • Mining
  • Marine
  • Agriculture
  • MCA
  • BCA
  • Internship
  • Jobs
  • Contact

Avionics Multiple Choice Questions | MCQs | Quiz

Avionics Interview Questions and Answers
Practice Avionics questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams.

Get Started

•   Head Up Displays
•   Helmet Mounted Displays
•   Head Down Displays
•   Control & Data Entry
•   Fly-By-Wire Technology - 1
•   Fly-By-Wire Technology - 2
•   FBW Control Laws
•   FBW Failure Survival
•   Digital Implementation
•   Fly-by-Light Flight Control
•   Height & Heading Controls
•   ILS Automatic Landing - 1
•   ILS Automatic Landing - 2
•   Flight Management - 1
•   Flight Management - 2
•   Data Bus Systems
•   UAV Avionics
•   Electronic Communication
•   Modulation & Multiplexing
•   Electromagnetic Spectrum
•   Attenuation & Decibels
•   Tuned Circuits
•   Filters
•   Fourier Theory
•   Amplitude Modulation
•   Frequency Domain
•   Single Sideband Modulation
•   Phase Modulation
•   FM Noise Effects
•   Data Digital Transmission
•   Parallel Transmission
•   Data Conversion - 1
•   Data Conversion - 2
•   Data Conversion - 3
•   Pulse Modulation
•   Digital Signal Processing
•   Radio Transmitters
•   Communication Receivers
•   ↓ Multiplexing ↓
•   Frequency Division
•   Time Division Multiplexing
•   Pulse Code Modulation
•   Transmission Line Basics-1
•   Transmission Line Basics-2
•   Transmission Line Basics-3
•   Standing Waves
•   Circuit Elements
•   Antenna Fundamentals
•   Antenna Types - 1
•   Antenna Types - 2
•   Satellite Orbits
•   Satellite Communication
•   Satellite Subsystems
•   Ground Stations
•   Satellite Applications
•   Guidance & Navigation
•   Flight Phases
•   Navigation Equations
•   Radio Propagation
•   Point Source Radio System
•   Hyperbolic Radio System-1
•   Hyperbolic Radio System-2
•   Orbital Mechanics
•   Satellite Signals
•   NAVSTAR GPS
•   Global Orbiting Navigational
•   Accelerometer
•   Gyroscopes - 1
•   Gyroscopes - 2
•   Strap Down Systems
•   Pressure Measurements
•   Side Slip Measurements
•   Air Data Equations
•   Air Data Computers
•   Hyper Sonic Air Data
•   Vertical References
•   Doppler Radar
•   Radar Altimeter
•   Stellar Inertial Navigation
•   Stellar Sensor Design
•   Landing Mechanics
•   ↓ Landing Systems ↓
•   Automatic Systems
•   Instrument Systems - 1
•   Instrument Systems - 2
•   Microwave Landing System
•   Satellite Landing System
•   Carrier Landing Systems
•   Air Traffic Control
•   Electronic Scanned Array
•   Primary & Secondary Radar
•   Modes S System
•   Collision Avoidance System

Best Reference Books

Avionics Books

Avionics Tests

Certification Test
Internship Test
Job Test
All Tests
Top Rankers
Practice Test 1
Practice Test 2
Practice Test 3
Practice Test 4
Practice Test 5
Practice Test 6
Practice Test 7
Practice Test 8
Practice Test 9
Practice Test 10
Mock Test 1
Mock Test 2
Mock Test 3
Mock Test 4
Mock Test 5
Mock Test 6
Mock Test 7
Mock Test 8
Mock Test 9
Mock Test 10
« Prev Page
Next Page »

Avionics Questions and Answers – Gyroscopes – 1

Posted on July 4, 2018 by Manish

This set of Avionics Multiple Choice Questions & Answers (MCQs) focuses on “Gyroscopes – 1”.

1. What is the purpose of a gyro in an inertial navigation system?
a) Space-stabilize the accelerometer
b) Angle of rotation
c) Measure rotation rate
d) Calculate velocity
View Answer

Answer: a
Explanation: The purpose of gyroscope or gyro in an inertial navigation system is to space stabilize the accelerometers. In gimballed platforms, the gyros measure the rotation of the platform, which is angularly isolated from the vehicle’s motion.
advertisement

2. What is the range of an order of angular rate magnitude that gyros used in military planes need?
a) 8
b) 8.5
c) 7.1
d) 3
View Answer

Answer: b
Explanation: A gyroscope on a military aircraft must sense angular rates as low as 0.005 deg/hr and as high as 400deg/sec, a range of 8.5 orders of magnitude. Strapdown gyros in civil aircraft need only sense an 8 order of magnitude range of angular rates.

3. Why are unfloated instruments with ball bearings not suitable for air navigation?
a) Weight restrictions
b) High drift rate
c) Low drift rate
d) Power restrictions
View Answer

Answer: b
Explanation: Gyroscopes are used as heading references. The spinning wheel, large angle, unfloated instruments with ball bearings that have drift rates on the order of 50deg/hr . and hence are useless for navigation.

4. Which of the following is false with respect to SDF floated gyros?
a) Wheel is floated at neutral buoyancy
b) Used in launch vehicles
c) Three gimbals are used
d) Magnetic pickoff used to sense rotation
View Answer

Answer: c
Explanation: In SDF floated gyros or single degree of freedom floated gyros, a spinning wheels were mounted inside a single gimbal that was floated at neutral buoyancy. A magnetic pickoff was used to sense rotation and they were primarily used in space launch vehicles.

5. Which of the following spinning wheel gyro has an accuracy of 0.001 deg/hr?
a) Floated TDF gyro
b) Electrostatically suspended TDF gyro
c) Floated SDF gyro
d) Unfloated ball bearing gyro
View Answer

Answer: b
Explanation: In electrostatically suspended TDF gyro, the spinning wheel is suspended electrostatically hence reducing friction and achieving 0.001 deg/hr accuracy but at costs orders of magnitude higher than the floated TDF gyros.
advertisement

6. The input, output and spin axes of a gyro are always perpendicular to each other.
a) True
b) False
View Answer

Answer: a
Explanation: The input, output and spin axes of a gyro are always perpendicular to each other regardless of the motion of the gyro or the platform in which it is fixed. If a gyro is used for heading reference, then the gyro’s spin axes are mounted perpendicular horizontally to the platform.

7. Which of the following is false with respect to spinning rotor gyros?
a) Mechanically complex
b) High probability of failure
c) Low run up time
d) High power consumption
View Answer

Answer: c
Explanation: The major disadvantage of spinning wheel or spinning rotor gyros is that they are mechanically complex and have a high probability of failure due to the moving components. They also require high powers and have high run up time. Run up time is the time taken for the gyro to start spinning at the required RPM after engine start.

8. What is the basic principle under which MEMS gyro work?
a) Sagnag effect
b) Coriolis effect
c) Angular momentum conservation
d) Mass conservation
View Answer

Answer: b
Explanation: MEMS Micro Electro Mechanical System gyro exploit the effects of Coriolis force. Coriolis force is experienced when a vibrating mass is subjected to a rate of rotation about an axis in the plane of vibration.

9. Which part of the insects acts as gyros?
a) Wings
b) Halteres
c) Thorax
d) Legs
View Answer

Answer: b
Explanation: Every flying object needs to maintain its orientation and insects that fly use halteres. Halteres work in the same principle as MEMS gyro, the vibrate and use Coriolis force to know their orientation.

10. Which of the following is false with respect to MEMS gyro?
a) Low failure rate
b) Low cost
c) High maintenance
d) Less power consumption
View Answer

Answer: c
Explanation: Micro machined vibrating mass rate gyros exploit semiconductor manufacturing technology for mass production. They are extremely reliable and rugged devices with low power consumption and offer the major advantage of relatively low cost. They also do not require the very high maintenance that spinning rotor gyros require.
advertisement

11. Gyros are used as feedback sensors in FBW.
a) True
b) False
View Answer

Answer: a
Explanation: In an FBW aircraft, the rate gyros and accelerometers provide the aircraft motion feedback which enables a manoeuvre command control to be achieved and an aerodynamically unstable aircraft to be stabilized by the flight control system.

Sanfoundry Global Education & Learning Series – Avionics.

To practice all areas of Avionics, here is complete set of 1000+ Multiple Choice Questions and Answers.

« Prev Page - Avionics Questions and Answers – Accelerometer
» Next Page - Avionics Questions and Answers – Gyroscopes – 2

« Avionics Questions and Answers – Accelerometer
Avionics Questions and Answers – Gyroscopes – 2 »
advertisement

Deep Dive @ Sanfoundry:

  1. Power Plant Questions and Answers
  2. Mass Transfer Questions and Answers
  3. Hydraulic Machines Questions and Answers
  4. Theory of Machines Questions and Answers
  5. Machine Dynamics Questions and Answers
  6. Avionics Questions and Answers
  7. Avionics Questions and Answers – Modular Avionics Architectures & UAV Avionics
  8. Avionics Questions and Answers – Primary and Secondary Radar
  9. Avionics Questions and Answers – Flight Management Systems – 2
  10. Avionics Questions and Answers – Traffic Alert, Collision Avoidance System & Weather Radar
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer and SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage & Cluster Administration, Advanced C Programming, SAN Storage Technologies, SCSI Internals and Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him below:
LinkedIn | Facebook | Twitter | Google+

Best Careers

Developer Tracks
SAN Developer
Linux Kernel Developer
Linux Driver Developer
Linux Network Developer

Live Training Photos
Mentoring
Software Productivity
GDB Assignment
Sanfoundry is No. 1 choice for Deep Hands-ON Trainings in SAN, Linux & C, Kernel Programming. Our Founder has trained employees of almost all Top Companies in India such as VMware, Citrix, Oracle, Motorola, Ericsson, Aricent, HP, Intuit, Microsoft, Cisco, SAP Labs, Siemens, Symantec, Redhat, Chelsio, Cavium, ST-Micro, Samsung, LG-Soft, Wipro, TCS, HCL, IBM, Accenture, HSBC, Mphasis, Tata-Elxsi, Tata VSNL, Mindtree, Cognizant and Startups.

Best Trainings

SAN I - Technology
SAN II - Admin
Linux Fundamentals
Advanced C Training
Linux-C Debugging
System Programming
Network Programming
Linux Threads
Kernel Programming
Kernel Debugging
Linux Device Drivers

Best Reference Books

Computer Science Books
Algorithm & Programming Books
Electronics Engineering Books
Electrical Engineering Books
Chemical Engineering Books
Civil Engineering Books
Mechanical Engineering Books
Industrial Engineering Books
Instrumentation Engg Books
Metallurgical Engineering Books
All Stream Best Books

Questions and Answers

1000 C Questions & Answers
1000 C++ Questions & Answers
1000 C# Questions & Answers
1000 Java Questions & Answers
1000 Linux Questions & Answers
1000 Python Questions
1000 PHP Questions & Answers
1000 Hadoop Questions
Cloud Computing Questions
Computer Science Questions
All Stream Questions & Answers

India Internships

Computer Science Internships
Instrumentation Internships
Electronics Internships
Electrical Internships
Mechanical Internships
Industrial Internships
Systems Internships
Chemical Internships
Civil Internships
IT Internships
All Stream Internships

About Sanfoundry

About Us
Copyright
Terms
Privacy Policy
Jobs
Bangalore Training
Online Training
Developers Track
Mentoring Sessions
Contact Us
Sitemap
© 2011 Sanfoundry. All Rights Reserved.