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MCQ - Mechanical TNPSC JTO
JTO - 440 - Welder - 440 - Unit IX Testing Welded Joints by Different

76)   

Gamma ray testing differs from X-ray testing mainly in:

A.
B.
C.
D.
Answer: B
77)   

Which safety measure is MOST critical during X-ray welding inspection?

A.
B.
C.
D.
Answer: B
78)   

The unit used to measure radiation exposure is:

A.
B.
C.
D.
Answer: B
79)   

X-ray testing is MOST suitable for detecting:

A.
B.
C.
D.
Answer: B
80)   

Which radiographic technique uses film placed on the opposite side of the radiation source?

A.
B.
C.
D.
Answer: B
81)   

Which gamma ray source has a shorter half-life?

A.
B.
C.
D.
Answer: B
82)   

In weld testing, film density is controlled by:

A.
B.
C.
D.
Answer: A
83)   

A major limitation of gamma ray testing compared to X-ray testing is:

A.
B.
C.
D.
Answer: B
84)   

Which statement is TRUE about X-ray tubes?

A.
B.
C.
D.
Answer: B
85)   

Radiographic sensitivity is usually expressed as:

A.
B.
C.
D.
Answer: B
86)   

In gamma ray welding inspection, the intensity of radiation decreases with:

A.
B.
C.
D.
Answer: C
87)   

The phenomenon of radiation causing film to darken is called:

A.
B.
C.
D.
Answer: C
88)   

In radiographic weld testing, which defect appears as a round dark spot?

A.
B.
C.
D.
Answer: B
89)   

Real-time radiography provides:

A.
B.
C.
D.
Answer: A
90)   

Gamma rays are produced by:

A.
B.
C.
D.
Answer: B
91)   

Which shielding material is commonly used for X-ray and gamma ray protection?

A.
B.
C.
D.
Answer: B
92)   

In radiography, "SFD" stands for:

A.
B.
C.
D.
Answer: A
93)   

Which radiographic defect indication is elongated and dark in appearance?

A.
B.
C.
D.
Answer: A
94)   

In gamma ray inspection, which factor MOST affects image sharpness?

A.
B.
C.
D.
Answer: B
95)   

A major advantage of gamma ray testing over X-ray testing is:

A.
B.
C.
D.
Answer: A
96)   

Which is a common isotope for industrial gamma radiography?

A.
B.
C.
D.
Answer: A
97)   

What is the main principle behind defect detection in radiography?

A.
B.
C.
D.
Answer: B
98)   

Which parameter must be minimized to reduce image blurring in radiography?

A.
B.
C.
D.
Answer: B
99)   

A radiograph with excessive film darkening indicates:

A.
B.
C.
D.
Answer: A
100)   

The main health risk from X-ray and gamma ray testing is:

A.
B.
C.
D.
Answer: B