Which of the following is not a base Sl unit?
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:C27 Which of the following is not a base SI unit?
С. cd
В. Hz
A. kg
D. mol
C28 What is the percentage change in resistance of a semiconductor strain gauge
with a temperature coefficient of 2e-5 °C-1, gauge factor of 2.1, under a strain
of 1 µ at 100 °C.
A. 0.15%
B. 0.25%
C. 0.2%
D. 0.1%
15
C29 Consider a hydraulic press that lifts a weight of 128 kg by applying a 4 kg force.
What is the ratio of area of the 'load' piston to the area of the force' piston?
С. 16
А. 32
В. 4/2
D. 64
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