Deck 4: Sensors and Sensor Technology

Question 1

A _ _ _ _ _ _, is a measurement device that uses gravity to measure the inclination of an object.

A)Inclinometer
B)Strain gauge
C)Magentoresistance
D)Gyroscope

Answer 1

Inclinometer

Question 2

In AMR the resistance produced by scattering is_ _ _ _ __ when the magnetization direction is perpendicular to the current direction

A)Zero
B)Minimum
C)Maximum
D)infinite

Answer 2

Minimum

Question 3

The _ _ __ in an element is a ratio of change in length in the direction of applied load to the original length of an element.

A)Stress
B)Strain
C)Poisson ratio
D)Young Modulus

Answer 3

Strain

Question 4

Today, almost all electronic weighing scales use ________ for the measurement of weight

A)Load cell
B)Strain gauge
C)Magentoresistance
D)Gyroscope

Question 5

The Hall Effect sensor is not capable of measuring a current flow at a distance greater than _ _ _cm

A)2
B)4
C)8
D)10

Question 6

To obtain the GMR effect, the spacer layers must be ____________

A)Thick
B)Thin
C)Both a) and b)
D)None of the above

Question 7

__________ load cells dominate the weighing industry.

A)Hydraulic
B)Pneumatic
C)Capacitance
D)Strain gauge

Question 8

In Hall Effect sensor, an electric current is _______ to the direction of the magnetic flux.

A)Parallel
B)Perpendicular
C)180 degree phase shift
D)None of the above

Question 9

______ Gyroscope was applied extensively in aircraft navigation.

A)Mechanical
B)MEMS
C)Ring laser
D)Fiber optic gyroscope

Question 10

When the magnetic layers are aligned in the opposing direction, then electrons originating in one layer are __________ from the adjacent layer

A)Freely
B)Blocked
C)rest on
D)All the above

Question 11

The Hall Effect is possessed by ________

A)Metals
B)Insulator
C)Semiconductor
D)both metals and semiconductor

Question 12

The operating principle of all mechanical gyroscopes is based on the ________

A)Ohm law
B)conservation of angular momentum
C)Faradays law
D)Tesla principle

Question 13

Sensors are used to detect the presence of any object without the need for any physical contact _ _ _ _ _ _

A)Motion sensor
B)Heading sensor
C)Proximity sensor
D)Temperature sensor

Question 14

Identify which type of material will have high resolution?

A)Carbon composition
B)Wirewound
C)Conductive plastic
D)Thermal composition

Question 15

Identify which type sensor?

A)Potentiometer
B)Accelerometer
C)LVDT
D)RVDT

Question 16

_ _ _ _ _ Jockey /wiper materials used in potentiometric sensors

A)Chromium
B)Nickel
C)Platinum
D)Copper

Question 17

_ _ _ _ _ _ _ is a standard for short-range radio communications, originally developed as a cable replacement to connect portable devices

A)Radio beacon
B)Bluetooth
C)GPS
D)All the above

Question 18

GPS satellite orbiting the earth at an altitude of about _ _ _ _ _ above the surface of earth.

A)19,200 Km
B)20,200 Km
C)21,200 Km
D)22,200 Km

Question 19

Ultrasonic rangers are_ _ _ _ _ _ _ _ _

A)Transmitter
B)Receiver
C)Transponder
D)Emitter

Question 20

Identify which type sensor?

A)Potentiometer
B)LIDAR
C)LVDT
D)RVDT

Question 21

To perform the angle measurement a synchro pair is used and they are called as _ _ _ _

A)Transmitter
B)Receiver
C)Transmitter and control transformer
D)None of the above

Question 22

LVDT is a _ _ _ _ _

A)Active transducer
B)Passive transducer
C)Both a) and b)
D)None of the mentioned

Question 23

In space segments, the satellites are arranged in _ _ _ orbits with _ _ _satellites in each orbit.

A)2, 4
B)4, 4
C)6,4
D)8,4

Question 24

Identify the picture and tell what type of sensor technology is used

A)Radio beacon
B)Bluetooth
C)GPS
D)All the above

Question 25

_ _ _ _ _ materials of the wire used in potentiometric sensors

A)Gold
B)Silver
C)Platinum
D)Copper