Measurement and Instrumentation
If an inductance is connected in one arm of the bridge and resistance is the remaining three arms

The bridge can be balanced if the resistance have some specific values
The bridge can always be balanced
None of the listed here
The bridge cannot be balanced

ANSWER DOWNLOAD EXAMIANS APP

Measurement and Instrumentation
In DC potentiometer measurments, a second reading is often taken after reversing the polarities of the DC supply and the unknown voltage and the average of the two reading is taken. This is with a view of eliminate the effects of

 Stray magnetic fields.
 Errorneous standardisation.
 Ripples of the DC supply.
  Stray thermal emfs.

ANSWER DOWNLOAD EXAMIANS APP