The power loss is an important factor for the design of_______________?

Related Mcqs:

1. A.C. network analyser is used to solve problems of_______________?

   A. load flow
   B. load flow and short-circuit
   C. load flow and stability
   D. load flow, short-circuit and stability
   E. none of the above

2. The short circuit in any winding of the transformer is the result of_______________?

   A. mechanical vibration
   B. insulation failure
   C. loose connection
   D. impulse voltage

3. A balanced 3-phase system consists of_______________?

   A. zero sequence currents only
   B. positive sequence currents only
   C. negative and zero sequence currents
   D. zero, negative and positive sequence currents

4. For the protection of power station buildings against direct strokes the requirements are___________?

   A. interception
   B. interception and conduction
   C. interception, conduction and dissipation
   D. interception, conduction, dissipation and reflection
   E. none of the above

5. To protect most of the electrical equipment handling low power, the types of relays used are______________?

   A. thermocouple
   B. electronic and bimetallic
   C. both (A) and (B)
   D. none of the above

6. The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to______________?

   A. lubricate the contacts
   B. insulate the contacts from switch body
   C. extinguish the arc
   D. all of the above
   E. none of the above

7. Air blast circuit breakers for 400 kV power system are designed to operate in_______________?

   A. 100 microsecond
   B. 50 millisecond
   C. 0.5 sec
   D. 0.1 sec

8. The inductive interference between power and communication line can be minimized by__________?

   A. transposition of the power line
   B. transposition of the communication line
   C. both (A) and (B)
   D. increasing the distance between the conductors

9. To limit short-circuit current in a power system are used______________?

   A. earth wires
   B. isolators
   C. H.R.C. fuses
   D. reactors

10. The steady state stability of the power system can be increased by_____________?

    A. connecting lines in parallel
    B. connecting lines in series
    E. using machines of high impedance
    D. reducing the excitation of machines
    E. none of the above