This set of Flexible Manufacturing System Multiple Choice Questions & Answers (MCQs) focuses on “Common Measuring Devices used in Automation”.
1. Which of the following is used to measure vibration and shock?
a) Radiator
b) Accelerometer
c) Bi metallic Switch
d) Ammeter
View Answer
Explanation: The device which is used to measure vibration and shock is known as accelerometer. It is an analog device and can be based on different types like piezoelectric, capacitive etc.
2. Which device is used to measure the strength of an electric current?
a) Modulator
b) Radiator
c) Gladiator
d) Ammeter
View Answer
Explanation: The device which is used to measure the strength of an electric current is known as ammeter. It is a very sensitive device and has the ability to measure current in several milli amperes.
3. Which uses a bimetallic coil to open and close an electrical contact as a result of temperature change?
a) Digital Switch
b) Modular Switch
c) Analog Switch
d) Bimetallic Switch
View Answer
Explanation: A Binary Switch which uses a bimetallic coil to open and close an electrical contact as a result of temperature change is known as bimetallic switch. Digital Switch, Modular Switch and Analog Switch do not use bimetallic coil to open and close an electrical contact as a result of temperature change.
4. Bimetallic Strips use two different materials of same thermal coefficient.
a) False
b) True
View Answer
Explanation: Bimetallic Strips use two different materials of different thermal coefficients. It is usually bonded together during its operation. The relative change in the thermal coefficients of the two materials is used to determine the change in temperature.
5. Which type of thermometer consists of bimetallic coils?
a) Bimetallic Thermometer
b) Modular Thermometer
c) Abstractive Thermometer
d) Polar Thermometer
View Answer
Explanation: The type of thermometer which consists of bimetallic coils is known as Bimetallic Thermometer. It is an analog temperature measuring device. Modular Thermometer, Abstractive Thermometer and Polar Thermometer do not consist of bimetallic coils.
6. Which type of sensors measure fluid flow rate based on pressure difference?
a) Fluid flow Sensor
b) Dynamic Sensor
c) Retract Sensor
d) Polar Sensor
View Answer
Explanation: The type of sensors which measure fluid flow rate based on pressure difference is known as fluid flow sensor. Fluid flow Sensor, Retract Sensor and Polar Sensor were not typically used to measure fluid flow rate based on pressure difference.
7. Which of the following device is used to measure force, power and torque?
a) Slip Gauge
b) Dynamometer
c) Feeler Gauge
d) Thermometer
View Answer
Explanation: The device which is used to measure force, power and torque is known s dynamometer. It is an analog device. Slip Gauge, Feeler Gauge and Thermometer were not typically used to measure force, power and torque.
8. Which transducer can be used to measure liquid level in a vessel or to activate contact switch?
a) Micro Transducer
b) Macro Transducer
c) Polar Transducer
d) Float Transducer
View Answer
Explanation: The transducer which can be used to measure liquid level in a vessel or to activate contact switch is known as float transducer. It consists of a float component attached to the lever arm.
9. Which switch is activated by the fluid pressure rather than by direct contact?
a) Activation Switch
b) Buzzer
c) Fluid flow Switch
d) Drag Switch
View Answer
Explanation: A type of switch which is activated by the fluid pressure rather than by direct contact is known as fluid flow switch. It is a type of binary switch similar to that of limit switch.
10. Which type of switch will have a binary contact sensor that is activated by lever arm or push button?
a) Drag Switch
b) Fluid flow Switch
c) Limit Switch
d) Buzzer
View Answer
Explanation: The type of switch which will have a binary contact sensor that is activated by lever arm or push button is known as limit switch. It requires some kind of mechanical action to initiate its action.
11. Which device is used to measure linear position or speed using a transducer that reads a stationary linear scale indication position?
a) Moderator
b) Regulator
c) Linear Encoder
d) Insulator
View Answer
Explanation: The device which is used to measure the linear position or speed using a transducer that reads a stationary linear scale indication position is known as linear encoder. It is digital device and speed can also be measured using time lapse.
12. Which sensor consists of a primary coil and two separate secondary coils separated by a magnetic core?
a) VVDT
b) PVDT
c) MCDT
d) LVDT
View Answer
Explanation: The sensor which consists of a primary coil and two separate secondary coils separated by a magnetic core is LVDT. It is an analog sensor which is used to measure the position of the object.
13. Which of the following is used to measure pressure of a gas or liquid?
a) Dynamometer
b) Voltmeter
c) Manometer
d) Ammeter
View Answer
Explanation: The measuring device which is used to measure pressure of a gas or liquid is known as manometer. It is an analog pressure measuring device. Dynamometer, Voltmeter and Ammeter were not typically used to measure pressure of a gas or liquid.
14. Which is used to measure atmospheric pressure?
a) Barometer
b) Row meter
c) Ammeter
d) Thermometer
View Answer
Explanation: The measuring device which is used to measure atmospheric pressure is known as barometer. It measures the pressure by comparing with the pressure of an ideal fluid.
15. Which of the following device is used to measure electrical resistance?
a) Thermometer
b) Ohmmeter
c) Chemo meter
d) Radiator
View Answer
Explanation: The device which is used to measure electrical resistance is known as ohmmeter. It is an analog device. Thermometer, Chemo meter and Radiator were not typically used to measure electrical resistance.
Sanfoundry Global Education & Learning Series – Flexible Manufacturing System.
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