Knowledge / Trivia tests -» Physics -» Energy / Electricity

Electro Optics

30 Questions - Developed by: - Developed on: 2019-10-16 - 820 taken

1

The image intensifier tube basically

Detects minutes amount of only visible near infrawave and convert it to light visible to our eyes
Detects minutes amount of both visible light and visible near infrawave and convert it to light visible to our eyes
Detects minutes amount of only visible light and convert it to light visible to our eyes

2

In order to detect small differences in the temperature most IR detectors must operate at

Resistive temperature
High temperature
Cryogenic temperature

3

The basic concept of terrain following is to provide for

A low level flight capability consistent with the aircraft flight restriction that stay as close as possible to the sea level to enhance survivability
A high level flight capability consistent with the aircraft flight restriction that stay as high as possible to a preset terrain to enhance mobility
A low level flight capability consistent with the aircraft flight restriction that stay as close as possible to a preset terrain to enhance survivability

4

What are the primary functions of the targeting port?

To laser designate for laser guided bomb weapon delivery and to detect and acquire targets
To laser designate to point at objects
To laser designate for communication during stealth missions

5

Which of these has an emissivity closer to zero?

Polish aluminum
Polish gold
Polish copper

6

Which of these provide an accurate pointing information to the fire control computer?

Laser detection designator
Laser target designator
Laser pointer designator

7

The navigation port consist of the

Terrain following signal and fixed imaging navigation subsistor (FINS) that are functionally independent of each other
Terrain following radar and fixed imaging navigation subsistor (FINS) that are functionally independent of each other
Terrain following radar and variable imaging navigation subsistor (FINS) that are functionally dependent of each other

8

The NDIS compatible lighting display

To interfere with night vision goggles and yet remain readable to unaided eyes
To not interfere with night vision goggles and yet remain readable to unaided eyes
To not interfere with night vision goggles and yet remain readable to aided eyes

9

Our eyes only responses to wavelength between

200-600NM which normally experience as colours
300-800NM which normally experience as colours
400-700NM which normally experience as colours

10

A blackbody is a source in which the emissivity

Is unity for no wavelengths that emits
Is unity for some wavelengths in which it emits
Is unity for all wavelengths in which it emits

11

Which is the most dominant absorber affecting infrared at sea level?

Water vapor
Breeze
Sea

12

What does the terrain following radar in the navigation port do?

It scans the terrain below of the aircraft and provides horizontal cues
It scans the terrain ahead of the aircraft and provides vertical cues
It scans the terrain behind of the aircraft and provides lateral cues

13

Terrain following radar (TFR) scans the terrain ahead of the aircraft and provides vertical plain steering cue to

Allowed automatic and manual terrain following operations day and night
Allowed manual terrain following operations day and night
Allowed automatic terrain following operations day and night

14

Which is true for a Gen 3 tube?

Produces a very low contrast image at high light levels
Produces a very high contrast image at low light levels
Produces a very low contrast image at low light levels

15

Which is not a characteristic of laser?

Made up of one colour
Mixes up of several colours
Mixes up of many colours

16

Laser produced

Single wavelength energy in the form of visible or invisible beams
Double wavelength energy in the form of visible or invisible beams
Multiple wavelength energy in the form of visible or invisible beams

17

The parts of an image intensifier tube are constructed in the following order

Phosphorus screen, photocathode, microchannel plate
Microchannel plate, phosphorus screen, photocathode
Photocathode, microchannel plate, phosphorus screen

18

Which statement on emissivity is true?

It is dependent on the type of material and its surface area
It is dependent on the type of material and its surface finish
It is dependent on the type of material and its surface finish

19

Which of the following does not provide a visual image to the operator?

Ground laser range finder
Underwater laser range finder
Airborne laser range finder

20

The parts of an image intensifier tube are

Phosphorus, microchannel plate and the photocathode screen
Photocathode, microchannel plate and the phosphorus screen
Photocathode, microchannel phosphorus and the plate screen

21

Which statement is true about laser safety?

Laser operation require proper electrical shielding and the operating voltages are generally high
Laser operation require proper electrical shielding and the operating voltages are generally little
Laser operation require proper electrical shielding and the operating voltages are generally lethal

22

Kirchoff law states that at a given temperature the ratio of the radiant emittance to the absortant is a contact for all materials this is to say that

A bad absorber is also a bad emitter
A good absorber is also a good emitter
A average absorber is also a average emitter

23

Which are the methods a laserable material can be excited to a semi-stable state?

1 and 2
2 and 3
1 and 3

24

Planck's law states that radiation will be emitted

As long as the temperature of the object is below zero degree Kelvin
As long as the temperature of the object is above zero degree Kelvin
As long as the temperature of the object is above zero degree Celsius

25

The principal component of the NDIS is the

Image intensifier tube
Voice intensifier tube
Video intensifier tube

26

Most sources are classified as ________ in which the emissivity is a constant for all wavelengths and can be assumed value between zero and one

Blackbody
Nobody
Greybody

27

______ law describe the spectrum distribution of the radiation from a blackbody

Kirchhoff
Ohms
Planck's

28

When radiant energy is incident on a surface, a fraction of the incident energy may be absorbed, reflected or ______

Received
Collected
Transmitted

29

_______ is a term that defines the ratio...

Emissivity
Sensitivity
Resistivity

30

What is the acronym of LASER?

Light Amplification Stimulated Emission Radiation
Light Amplification by Stimulated Emission of Radiation
Light Amplification by Simulated Emission of Radiation

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