It is an electrical resistance thermometer made from a semi-conductor having a large, negative temperature co-efficient useful to measure the rock temperature
A. calibrator
B. thermistor
C. micro-seismic monitor
D. geophone
Answer: Option B
This Question Belongs to Mining Engineering >> Rock Mechanics And Roof Supporting
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Which of the following is not considered in Bieniawski's geo-mechanics classification?
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What is the expected range of LBC of a 2.5 m long, 15 cm diameter timber prop?
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D. 120 - 130 KN
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B. servocontrolled test
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A. 1.25
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