1. Gyroscope is used for_________
a) Anti-theft
b) Capacitive proximity sensing
c) Gaming
d) Angle detection
Explanation: Gyroscope is mainly used in 3D mouse, games and athlete training. Gyroscope is also used in navigation, Remote control, notebooks and ultrabooks.
2. Gyroscope is used to measure_________
a) Linear Acceleration
b) Angular velocity
c) Angular velocity and linear acceleration
d) Linear velocity
Explanation: Gyroscope is used to measure angular velocity. Gyroscopes aimed to create smaller and more sensitive devices.
3. What is the rate noise density of gyroscope?
a) 0.011 dps/√Hz
b) 0.0011 dps/√Hz
c) 1.11 dps/√Hz
d) 11.1 dps/√Hz
Explanation: Gyroscopes offer superior stability over time and temperature, with a rate noise density up to 0.011 dps/√Hz. This guarantees the level of accuracy required by the most of the advanced motion-based applications.
4. How many sensing structures are there in gyroscope sensor?
a) Two structures
b) Three structures
c) Depending on application
d) Single structure
Explanation: The 3-axis gyroscopes have a single sensing structure for motion measurement along all three orthogonal axis, while other solutions on the market relay on two or three independent structures.
5. Theory behind working of accelerometer can be understood from ________
a) Rotary
b) Liner
c) Newtonian mechanism
d) Reciprocating
Explanation: Theory behind working of accelerometer can be understood from mechanical model of accelerometer, using Newtonian mechanics. The sensing element essentially is a proof mass.
6. ________ is included in a system to provide desirable damping effect.
a) Speedometer
b) Seismic
c) Damper
d) Dashpot
Explanation: A dashpot is also included in a system to provide desirable damping effect. The dashpot is attached between the mass and the casing.
7. Displacement and acceleration are related by fundamental scaling law.
a) True
b) False
Explanation: Displacement and acceleration are related by fundamental scaling law. A higher resonant frequency implies less displacement or low sensitivity.
8. ________ sensor is used for tracking rotation or twist.
a) Gyroscope
b) Temperature
c) Pressure
d) Proximity
Explanation: Accelerometers in mobile phones are used to detect the orientation of the phone. The gyroscope adds an additional dimension to the information supplied by the accelerometer by tracking rotation or twist.
9. Ring laser type gyroscope operates based on _________ principle.
a) Damper
b) Sagnac
c) Seismic
d) Dashpot
Explanation: Ring laser type gyroscope operates based on sagnac effect. Sagnac involves splitting a beam of light in two and sending them through different opposite paths and then creating interference between the two beams.
10. What is ESP8266?
a) WIFI module
b) Sensor
c) Board
d) USB cable
Explanation: The ESP8266 WIFI module is used to make an IOT device that plots temperature data on the web.