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Measurements and Instrumentation - Engineering

Q1:

Assertion (A): Double Kelvin's bridge is used to measure low resistances. Reason (R): In low resistance, the contact and lead resistances are very important.

A Both A and R are true and R is correct explanation of A

B Both A and R are true but R is not correct explanation of A

C A is true R is false

D A is false R is true

ANS:A - Both A and R are true and R is correct explanation of A

Answer should be (b) because the reason does not specify the particular property of Kelvin's Double Bridge which makes it efficient in measuring low resistance.