1. The monitoring of machines, gears and objects are achieved by which sensor?
a) Humidity sensor
b) Proximity sensor
c) Touch sensor
d) Pressure sensor
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.
2. Which proximity sensor indicates level?
a) Inductive Proximity Sensor
b) Capacitive Proximity Sensor
c) Magnetic Proximity Sensor
d) Ultrasonic Proximity Sensor
Explanation: Capacitive Proximity Sensor indicates level and the fill amount present in containers, behind covering. They are used to track all objects including non-metallic ones.
3. Which proximity sensors are used in automotive?
a) Inductive Proximity Sensor
b) Capacitive Proximity Sensor
c) Magnetic Proximity Sensor
d) Ultrasonic Proximity Sensor
Explanation: They are widely used in automotive such as parking sensors. Ultrasonic Proximity Sensors are used in automotive.
4. Which proximity sensor detects positioning of an object?
a) Inductive Proximity Sensor
b) Capacitive Proximity Sensor
c) Optical Proximity Sensor
d) Magnetic Proximity Sensor
Explanation: They recognize, for non-contact and precisely, the positioning of the object.
5. Which protocol is used by proximity sensor?
a) I2C
b) SPI
c) UART/USART
d) CAN
Explanation: Microcontroller communication is via standard I2C, where the host can set measurement parameters and request results. If desired, programmable threshold allow the VCNL4100 to interrupt the host once threshold values are crossed, thereby minimizing device polling.
6. Which device generates output signal when metal objects are either inside or entering into sensing area.
a) Capacitive Proximity
b) Magnetic Proximity
c) Inductive proximity
d) Parallel Proximity
Explanation: The Inductive Proximity Sensor is a solid state device which generates an output signal when metal objects are either inside or entering into its sensing area from any direction.
7. ________ detects metals but along with it can also detect resins, liquids.
a) Inductive proximity
b) Capacitive Proximity
c) Magnetic Proximity
d) Parallel Proximity
Explanation: 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.
8. What is the sensing range for magnetic proximity sensors?
a) 120mm
b) 90mm
c) 150mm
d) 100mm
Explanation: 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.
9. Other name for tactile sensor is______________
a) Pressure sensor
b) Humidity sensor
c) Touch sensor
d) Temperature sensor
Explanation: 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.
10. How many types of touch sensors are present?
a) 2 types
b) 3 types
c) 4 types
d) 5 types
Explanation: There are two types of sensors: capacitive sensor
Resistive sensor.