# MCQs on Mechanical Testing

1 - Question

Hounsfield tensometer can be used to perform __________
a) Tensile test
b) Compressive test
c) Hardness test
d) Toughness test
Explanation: Hounsfield tensometer, Universal testing machine, Instron and MTS (materials testing system) are the common machine that are used to for tensile test. Hounsfield tensometer is a small machine and widely used for tensile test in research laboratories.

2 - Question

ASTM stands for __________
a) American Society for Tensile Measurement
b) American Society for Testing and Materials
c) American Society for Tool Measurement
d) American Society for Tensile Material
Explanation: ASTM stands for American Society for Testing and Materials. ASTM develops technical standards for a wide range of materials products. American Society for Tensile Measurement are used to decide various standard in tensile measurement.

3 - Question

According to ASTM standard, which of the following relation is correct about gauge length of cross section area ‘A’?
a) L = 2.51A−−√
b) L = 4.51A−−√
c) L = 2A−−√
d) L = 3.51A−−√

4 - Question

According to BS standard, which of the following relation is correct about gauge length of cross section area ‘A’?
a) L = 2.51A−−√
b) L = 4.51A−−√
c) L = 4A−−√
d) L = 3.51A−−√
Explanation: According to BS standard, gauge length = 4A−−√, where A denotes the cross section area of specimen used under testing.

5 - Question

According to DIN standard, which of the following relation is correct about gauge length of cross section area ‘A’?
a) L = 12.51A−−√
b) L = 14.51A−−√
c) L = 4A−−√
d) L = 11.2A−−√
Explanation: According to DIN standard, gauge length=11.2A−−√, where A denotes the cross section area of specimen used under testing.

6 - Question

Mohs hardness test has a scale range of _________
a) 1 to 10
b) 100 to 200
c) 1 to 1000
d) 1 to 3000
Explanation: Mohs hardness scale was developed by “Frederich Mohs” in 1822, which is a chart that denotes relative hardness of the various materials (1-softest to 10-hardenst). According to Mohs scale, diamond is the hardest material and talc is the softest material.

7 - Question

Brinell hardness test has a scale range of _________
a) 0 to 10
b) 100 to 200
c) 0 to 1000
d) 0 to 3000
Explanation: Brinell hardness test has a scale range of 0 to 3000. Brinell hardness number of soft irons is ranges from 67 to 500.

8 - Question

Rockwell hardness test has a scale range of _________
a) 0 to 10
b) 100 to 200
c) 0 to 1000
d) 0 to 3000
Explanation: Rockwell hardness test has a scale range of 0 to 1000. It is used to measure the hardness of a specimen.

9 - Question

Vickers hardness test has a scale range of _____________
a) 0 to 10
b) 100 to 200
c) 0 to 1000
d) 0 to 3000
Explanation: Vickers hardness test has a scale range of 0 to 3000. It is used to measure the hardness of a specimen.

10 - Question

Brinell Hardness Number (BHN) for soft iron is between _____________
a) 1000-2000
b) 227-857
c) 67-500
d) 0-10