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Correct option is (c) 120mm

To explain I would say: Capacitive PROXIMITY can also detect metals but along with it can also detect resins, liquids, POWDERS, etc. This sensor working can vary accordingly COVERING material, cable longness, noise sensitivity.Its maximum RANGE of SENSING is 25mm.

Right answer is (c) Newtonian mechanism

Easiest 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.

Right ANSWER is (a) True

For EXPLANATION I WOULD say: A buit-in temperature sensor is used by the SIGNAL processing circuitry to provide stable outputs across the temperature range -40 ^OC to +85^oC.

The correct choice is (B) Angular velocity

The explanation is: GYROSCOPE is used to measure angular velocity. Gyroscopes AIMED to CREATE smaller and more SENSITIVE devices.

Correct OPTION is (a) Absolute PRESSURE Measurement

Explanation: Pressure measured relative to perfect vacuum is termed as Absolute Pressure Measurement. Perfect vacuum is a condition where there is no matter present in the atmosphere and HENCE nil air pressure exits in that region.

Correct answer is (d) Inductive PROXIMITY Sensor

For explanation I would SAY: Different proximity sensor targets demand different sensors. The different types of proximity sensors are: Inductive, Capacitive, Ultrasonic, Photoelectric, Magnetic, ETC.

Right CHOICE is (a) Capacitive Sensor

To explain: These sensors measure MOISTURE levels using a humidity dependent CONDENSER; they are suitable for RH RANGE and condensation tolerance. These sensors are commonly used in industrial and commercial environments.

The correct option is (C) Ambient temperature and Water vapor pressure

Explanation: RELATIVE humidity is a FUNCTION of both ambient temperature and water vapor pressure. Therefore there is a relationship between relative humidity, the amount of moisture PRESENT in the sensor, and sensor capacitance. This relation governs the operation of a capacitive humidity instrument.

Right option is (d) Single STRUCTURE

Best 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.

Correct choice is (d) Dashpot

To explain: A dashpot is ALSO INCLUDED in a system to provide desirable DAMPING EFFECT. The dashpot is ATTACHED between the mass and the casing.

Correct option is (a) VELOCITY/time

For explanation I WOULD say: Accelerometer is the measurement of the change in velocity or speed divided by time. For example, a car accelerating from a standstill to 60mph in 60 SECONDS is determined to have an ACCELERATION of 10mph per second(60/6).

Right choice is (c) Industrial

The explanation: PRESSURE SENSORS are used to MONITOR GASES and their partial pressures in industrial units so that the LARGE chemical reactions take place in precisely controlled environmental conditions.

The CORRECT answer is (d) 3v

For explanation: The pressure sensor has and ABSOLUTE pressure of 1.2 bar to 10 bar. The TYPICAL operating SYSTEM is 3v. With a supply voltage of 5V they offer sensitivities of between 15 mV/bar and 80 mV/bar, depending on type.

The correct choice is (a) True

To explain I would SAY: Capacitive TYPE sensors are linear and hence can measure RH from 0% to 100%, but require complex CIRCUIT and also need regular calibration.

Correct choice is (a) 120MM

To explain I would SAY: Magnetic PROXIMITY sensors have no electrical noise effect and it can work on DC, AC, AC/DC. These types of sensors have HIGHEST sensing range UPTO 120mm.

Right answer is (d) Dew/fost point or Parts Per Million or Relative Humidity

Easy explanation: Most COMMONLY units for humidity MEASUREMENT are Relative Humidity(RH), DEW/Fost point (D/F PT) and Parts Per Million(PPM). RH is a function of temperature. DEW/Fost point is a function of the pressure of the as but is INDEPENDENT of temperature and is therefore DEFINED as absolute humidity measurement of temperature. PPM is also an absolute measurement.

Correct answer is (a) Hygrometer

To elaborate: A hygrometer is an instrument USED for measuring the water VAPOR in the atmosphere. HUMIDITY measurement instruments usually rely on measurements of some quantity such as temperature, PRESSURE, mass or a mechanical or electrical change.

Correct choice is (B) RFM3200

The EXPLANATION: RFM3200 is a WIRELESS battery-free temperature sensor. This flexible sensor is DESIGNED to MONITOR the environment and material temperature in a wide range of settings.

The correct CHOICE is (b) 3- axis

Easiest explanation: It uses 3-axis accelerometer. It detect ORIENTATION, SHAKE, tap, double tap, fall, tilt, MOTION, positioning, SHOCK or vibration.

The correct answer is (c) GAUGE PRESSURE Measurement

Best explanation: Gauge Pressure Measurement is defined as SUBTYPE of differential pressure measurement where we COMPARE pressure pressure at any point to the current atmospheric pressure. Gauge Pressure measurement is used in applications like TIRE pressure of blood pressure measurement.

Correct choice is (a) Absolute pressure sensor

For EXPLANATION I would say: Pressure sensor can be classified in terms of pressure ranges they MEASURE, temperature ranges of OPERATION, and most importantly the type of pressure they measure. Absolute pressure sensor is a sensor that measures the pressure relative to PERFECT VACUUM.

The CORRECT answer is (b) CAPACITIVE Proximity

To elaborate: Capacitive Proximity can also DETECT metals but along with it can also detect resins, liquids, powders, etc. This sensor working can vary accordingly covering material, cable longness, NOISE SENSITIVITY.

Right answer is (c) Both atmospheric and process

To EXPLAIN: Capacitive RH sensors DOMINATE atmospheric and process measurements and are the only types of FULL range RH measuring DEVICES capable of OPERATING accurately down to 0% RH.

The correct answer is (b) Sagnac

Easy 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.

Correct answer is (c) Gaming

The BEST I can explain: Gyroscope is mainly used in 3D mouse, GAMES and athlete training. Gyroscope is also used in navigation, Remote CONTROL, NOTEBOOKS and ultrabooks.

Correct CHOICE is (b) 1 meters

Explanation: VCNL4100CT EXPAND the range of APPLICATIONS by INTRODUCING a high-power IR emitter that allows proximity detection up to ONE meter.

Right OPTION is (d) 2 types

Explanation: Electronic TYPE hygrometers or humidity SENSORS can broadly divided into two categories: one employs capacitive sensing principle, while other USE resistive effects.

The CORRECT option is (b) Proximity sensor

The best explanation: The monitoring of machines, gears and objects are achieved precisely by the IOT(INTERNET OF THINGS) WIRELESS proximity sensors. They use in industries ranging from robotics to machine tools, from measuring instruments to ASSEMBLY lines, from food sector to chemical INDUSTRY, etc.

The correct option is (d) TEMPERATURE sensor

The explanation is: It MEASURES temperature and SENDS an email if the temperature goes under a THRESHOLD.

The correct answer is (c) TOUCH SENSOR

To EXPLAIN I would say: Touch sensors are also called as tactile sensor and are sensitive to touch, force or pressure. These are one of the SIMPLEST and useful sensors.

Right choice is (c) THERMOCOUPLE

Explanation: Thermocouple consists of TWO different metals CONNECTED at two points. The VARYING VOLTAGE between these two points reflects proportional changes in temperature.

The correct choice is (d) RFM3200

The explanation is: It is a battery-free sensor. This lug mounted sensor is DESIGNED to monitor ELECTRIC distribution and switching equipment temperatures. Typical APPLICATIONS INCLUDE building power distributions, data centers, etc.

Correct option is (b) MANOMETER

Easiest explanation: A mercury manometer is a simple pressure standard and MAY be used for gauge, differential, and absolute MEASUREMENTS with a SUITABLE reference.

The correct choice is (d) SPI and I2C

To EXPLAIN: The BGM160 is fitted with digital bi-directional SPI and I2C interfaces for OPTIMUM system INTEGRATION, which require 3.3v OPERATION.

The correct ANSWER is (a) True

Explanation: Accelerometers are LIKEWISE used in cars as the industry method way of detecting car crashes and deploying AIRBAGS ALMOST instantaneously.

The correct answer is (a) True

To explain I would say: The c39 is especially SUITABLE for IOT and consumer applications. One feature of c39 is its LOW insertion height of just 0.24mm, which makes the low-profile MEMS pressure sensor die IDEAL for applications in smartphones and wearables.

The correct option is (d) 3 LEGS

The best explanation: The temperature SENSOR LM35 have 3 legs, the first leg is Vcc, you can connect this to the 3.3V. The middle leg is VOUT, where the temperature is read from.

The correct ANSWER is (d) PRESSURE sensor

The explanation is: Pressure sensors are ultimate SOLUTION for IOT as they can be used in VARIOUS AREAS such as touch screen devices.

Right choice is (a) grams/m^3

Best EXPLANATION: Absolute HUMIDITY is DEFINED as ratio of mass (VAPOR) to volume and has units of grams/m^3.

Correct option is (b) Humidity SENSOR

Explanation: We can read data from any sensor and ANALYSE it graphically from ANYWHERE in the world. Here, we can read temperature and humidity data from DHT11 sensor and upload it to a Think speak cloud USING Arduino Uno.