Schering Bridge

Pre Test

Please attempt the following questions

1. Q1. Schering bridge is used for _________.
   a. low voltages only
   b. low and high voltages
   c. high voltages only
   d. intermediate voltages only
   


2. Q2. Power factor of a Schering bridge is _________.
   a. p.f. = sin∅x = Zx⁄Rx
   b. p.f. = cot∅x = Rx⁄Zx
   c. p.f. = cos∅x = Rx⁄Zx
   d. p.f. = tan∅x = Rx⁄Zx
   


3. Q3. For phase angle close to 90°, the power factor of the bridge is _________.
   a. p.f. = ωRx
   b. p.f. = ωCx
   c. p.f. = RxCx
   d. p.f. = ωRxCx
   


4. Q4. For a series RC circuit, what is δ?
   a. voltage between series RC combination and C
   b. voltage between series RC combination
   c. voltage across C
   d. voltage across R
   


5. Q5. What is the expression for the loss angle?
   a. tan⁡ δ = ωR4
   b. tan⁡ δ = ωR4C4
   c. tan⁡ δ = ωC4
   d. tan⁡ δ = R4C4