IRT Level 1 :: Infrared Thermography Testing MCQ’s Part-1| Quiz Practice for ASNT/NDT Exam Questions

Non-Destructive Testing: Total 50′ Questions for Conduct of Examinations at NDT IRT Level-1. (Quiz Part-1 50′ .).

Infrared Thermography Testing Level -1 (IRT) General Examination Part-1

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IRT Level 1 :: NDT Infrared Thermography Testing MCQ’s Part-1

1.

Who found infrared radiation?

 
 
 
 

2.

Which of the following camera parameters is not adjustable in post-processing computer software?

 
 
 
 

3.

At what temperature does the emittance of thermal radiation begin?

 
 
 
 

4.

Also Read:  ASNT NDT Level 1 Exam Practice Mock Test Latest Questions and Answers - Quizzes

You are inspecting an energized 440 V electrical three-phase fused disconnect. The fuse caps on the fuses are copper and appear cooler than the fuse cardboard bodies. What is probably the reason?

 
 
 
 

5.

Which of the following has the lowest thermal conductivity?

 
 
 
 

6.

One calorie is equivalent to how much heat energy?

 
 
 
 

7.

A thick ceramic coffee mug has an emissivity of 0.84 in the 8-14 ?m wave band. What is its reflectivity?

 
 
 
 

8.

Which of the following camera adjustments is used to optimize the thermal contrast of a thermal image?

 
 
 
 

9.

A perfect thermal mirror would have an emittance equal to:

 
 
 
 

10.

Thermal infrared radiation occurs at wavelengths:

 
 
 
 

11.

Which of the following is incorrect?

 
 
 
 

12.

What does IFOV stand for?

 
 
 
 

13.

The branch of science that studies the interactions of electromagnetic waves with matter is _______.

 
 
 
 

14.

The radiant energy emitted by an object is a function of what power of its absolute temperature?

 
 
 
 

15.

Which of the following IR camera settings may affect a radiometric temperature measurement?

 
 
 
 

16.

Which of the following is not a typical pattern of an anomalous thermal image associated with wet roof insulation?

 
 
 
 

17.

Which of the following camera adjustments will have an effect on temperature measurement?

 
 
 
 

18.

Emittance of a surface may vary with which of the following?

 
 
 
 

19.

Which of the following temperature scales is considered to be a relative scale?

 
 
 
 

20.

An appropriate thermal span and level setting for imaging a human face in a 22 °C (72 °F) room are:

 
 
 
 

22.

What is the wavelength range of short wavelength infrared?

 
 
 
 

23.

Which of the following temperature scales is considered an absolute scale?

 
 
 
 

24.

During the summer with clear sunny days, clear nights, and a diurnal temperature swing from 32 °C (90 °F) to 10 °C (50 °F), a lake and the surrounding land would probably have the following thermal relationship:

 
 
 
 

25.

Which type of infrared radiation is used in TV remote sensors?

 
 
 
 

26.

The temperature of an aluminum bus bar is being measured. You have determined emissivity is 0.15. What is the reflectivity of the bus bar?

 
 
 
 

27.

Choose YES or NO: Infrared radiations have a heat-inducing property.

 
 

28.

In an infrared roof moisture survey, what effects cause the areas of a roof over wet insulation to be warmer at night than those over dry insulation?

 
 
 
 

29.

An opaque graybody surface with an emissivity of 0.04 would be:

 
 
 
 

30.

Why do a block of wood and a piece of steel at the same temperature feel so different when they come into contact with your body?

 
 
 
 

31.

Which of the following is a commonly used technique to increase contrast in thermal images?

 
 
 
 

32.

The first law of thermodynamics states:

 
 
 
 

33.

A micron is a unit of:

 
 
 
 

34.

Which material below is transmissive to long wave (8-14 ?m) infrared radiation?

 
 
 
 

35.

A micron is a unit of measure that is:

 
 
 
 

37.

Which among the following is used in astronomical telescopes and optical fibre communications?

 
 
 
 

38.

The ratio of the radiant emittance of a given body to that of a blackbody is defined as:

 
 
 
 

39.

What can we say for certain about a clear piece of thin plastic?

 
 
 
 

40.

A quick and simple technique for improving the emissivity of highly reflective surfaces is to:

 
 
 
 

41.

Periodically most focal plane array thermal imagers pause the live image and go through an internal routine called what?

 
 
 
 

42.

The material property that relates to the rate at that heat flows through a solid material is called:

 
 
 
 

43.

For every degree on the Celsius temperature scale, how many degrees are on the Fahrenheit scale?

 
 
 
 

44.

State true or false: Microwaves are used in night vision goggles.

 
 

45.

The second law of thermodynamics states:

 
 
 
 

46.

A low sloped roof is inspected in the early evening after a sunny day. Wet absorbent roof insulation appears warmer than dry insulation because:

 
 
 
 

47.

A large variance of the viewing angle from the normal (90°) to a non-metallic the emitted surface of interest energy sensed.

 
 
 
 

Question 1 of 47

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