Quiz

Q1. In closed loop control system, with positive value of feedback gain, the overall gain of the system will be

Q2. The unit of electrical energy is

Q3. In a transmission system, the weight of copper used is proportional to

Q4. Constantan contains

Q5. The output of an op-amp changes from -9 V to +9 V in 1 \(\mu s\). Find the slew rate.

Q6. For the transformer circuit shown, if the turns ratio is 3 : 1, then the power transferred to the load is ____________.

Q7. A generating station having 'n' section busbars each rated at Q kVA with \(x \%\) reactance is connected on the tie-bars system through busbar reactances of b%. Determine the short-circuit kVA if a 3-phase fault takes place on one section.

Q8. Corona loss is less when the shape of the conductor is

Q9. An bistable multivibrator has

Q10. A 4-pole DC machine has          magnetic circuits.