Related Questions

Polyphase generators produce simultaneous multiple sinusoidal voltages that are separated by
A Certain constant phase angles
B Certain constant frequencies
C Certain constant voltages
D Certain constant currents
Between the branch voltages of a loop the Kirchhoff's voltage law imposes
A Nonlinear constraints
B Linear constraints
C No constraints
D None of the above
Pin type insulators are generally not used for voltages beyond
A 1 kV
B 11 kV
C 22 kV
D 33 kV
Which one of the following statements is true for the voltages in a series RL circuit?
A The total voltages is equal to the sum of the voltages across the resistance and inductance
B The voltage always has the same amplitude and phase for every part of the circuit
C The total voltage is less than the sum of the voltages across the resistance and inductance
D The total voltage lags the total current by less than 90
E None of the above
Which one of the following statements is true for the voltages in a series RC circuit?
A The total voltage is equal to the sum of the voltages across the resistance and capacitance
B The voltage always has the same amplitude and phase for every part of the circuit
C The total voltage is less than the sum of the voltages across the resistance and capacitance
D The total voltage is greater than the sum of the voltages across the resistance and capacitance
E None of the above
A uniformly loaded D.C. distributor is fed at both ends with equal voltages. As compared to a similar distributor fed at one end only, the drop at the middle point is
A One-fourth
B One-third
C One-half
D Twice
Using Kirchhoff's voltage law, you can find the voltages across certain parts of a series-parallel circuit.
A True
B False
In a LVDT, the two secondary voltages
A Are independent of the core position
B Vary unequally depending on the core position
C Vary equally depending on the core position
D Are always in phase quadrature
For cost and safety, the outdoor substations are installed for voltages above
A 11 kV
B 33 kV
C 60 kV
D 110 kV
Which of the following devices may be used to provide protection against lightening over voltages ?
A Horn gaps
B Rod gaps
C Surge absorbers
D All of the above

Next steps