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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

101.

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/√HzThis question was addressed to me in unit test.Query is from Accelerometer and Gyroscope Sensor in portion Sensors of IOT

Answer»

The correct option is (a) 0.011 dps/√Hz

To explain I would say: 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.
Discussion
102.

How many and what are the parts that are present in the accelerometer sensor?(a) 1, capacitor sensor(b) 3, piezoelectric effect, Analog display, digital display(c) 2, piezoelectric effect and capacitor sensor(d) 2, Capacitor sensor, digital DisplayThis question was posed to me during an online interview.The query is from Accelerometer and Gyroscope Sensor in section Sensors of IOT

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Correct option is (C) 2, piezoelectric effect and capacitor SENSOR

Best explanation: The accelerometer consists of many different parts and work in many ways, two of which are piezoelectric effect and the capacitor sensor. The piezoelectric effect is the most common form of accelerometer and uses microscopic crystal STRUCTURES that become STRESSED due to accelerative forces.

The capacitance accelerometer senses changes in capacitance between micro structures located next to the device.
Discussion
103.

The computer devices and smart phones that have _______ with pressure sensor.(a) Automotive Industry(b) Industrial(c) Aviation(d) Touch screenThis question was posed to me in class test.This interesting question is from Pressure Sensor in section Sensors of IOT

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The correct ANSWER is (d) Touch SCREEN

Best explanation: The computer devices and smart phones that have touch screen display with PRESSURE SENSOR. Whenever slight pressure is applied on touch screen through a finger, the sensor DETERMINES where it has been applied.
Discussion
104.

What is the absolute pressure of c39?(a) 2.0 bar(b) 1.5 bar(c) 1.2 bar(d) 1.35 barThe question was asked in final exam.This interesting question is from Pressure Sensor in division Sensors of IOT

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Correct choice is (C) 1.2 BAR

Best explanation: The c39 is DESIGNED for an absolute pressure of 1.2 bar and, like the c33 series, OFFERS long-term STABILITY of +/-0.35% FS.
Discussion