Gyroscopes MCQs : Here you will find MCQ Questions related to "Gyroscopes" in Avionics. These Gyroscopes MCQ Questions Will help you to improve your Avionics knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations
Which of the following is true about gyroscope?
A. It is a device used for measuring or maintaining orientation and angular velocity
B. It is a spinning wheel or disc in which the axis of rotation (spin axis) is free to assume any orientation by itself.
C. Applications of gyroscopes include inertial navigation systems, such as in the Hubble Telescope
D. All of the above
Explanation: All of the above is true about Gyroscope.
The invention of the gyroscope is usually attributed to the French physicist Jean-Bernard-Leon Foucault in ?
Explanation: The invention of the gyroscope is usually attributed to the French physicist Jean-Bernard-Leon Foucault in 1852.
If the gyroscope is not spinning, it acquires angular momentum in the direction of the torque
C. Can be true or false
D. Can not say
Explanation: If the gyroscope is not spinning, it acquires angular momentum in the direction of the torque (L = ΔL), and it rotates around a horizontal axis, falling over just as we would expect.
How many types of gyros are common in aviation?
Explanation: Three types of gyros are common in aviation : Mechanical Gyro, MEMS Gyro and Laser Gyro.
The hemispherical resonator gyroscope (HRG), also called a?
C. Wine-glass gyroscope
Explanation: The hemispherical resonator gyroscope (HRG), also called a wine-glass gyroscope[contradictory] or mushroom gyro, makes use of a thin solid-state hemispherical shell, anchored by a thick stem.
A vibrating structure gyroscope (VSG), also called a Coriolis vibratory gyroscope.
C. Can be true or false
D. Can not say
Explanation: A vibrating structure gyroscope (VSG), also called a Coriolis vibratory gyroscope
What is the range of an order of angular rate magnitude that gyros used in military planes need?
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.
Which of the following systems do not use MEMS gyro?
A. Space launch vehicles
B. Flight control systems
C. Missile guidance
D. Car stability systems
Explanation: MEMS gyros are being exploited not only in avionic applications such as flight control, standby attitude and heading reference systems, and missile mid-course guidance but also in the automobile industry in car stability enhancement systems. Space launch vehicles use ring laser gyros which are more accurate.
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. Magnetic pickoff used to sense rotation
D. Three gimbals are used
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.
Why is a tuning fork gyro better than the vibrating cylinder type gyro?
A. Low power consumption
B. Easy to manufacture
C. Low run up time
D. Reduce base motion
Explanation: The vibrating mass rate gyro is a simple instrument suffers from the unacceptable characteristic that the smallest linear motions applied to its base cause unacceptably large errors. To overcome the effect of base motion, it is necessary to use balanced oscillations in which the oscillations of one mass are counter-balanced by equal and opposite motion of a second equal mass as in the case of tuning fork gyro.