[amp_mcq option1=”glass” option2=”porcelain” option3=”iron” option4=”P.V.C.” correct=”option1″]
Transmission and distribution
42. The power transmitted will be maximum when
[amp_mcq option1=”Corona losses are minimum” option2=”Reactance is high” option3=”Sending end voltage is more” option4=”Receiving end voltage is more” correct=”option3″]
43. A booster is a
[amp_mcq option1=”Series wound generator” option2=”Shunt wound generator” option3=”Synchronous generator” option4=”None of the above” correct=”option4″]
44. In a D.C. 3-wire distribution system, balancer fields are cross-connected in order to
[amp_mcq option1=”boost the generated voltage” option2=”balance loads on both sides of the neutral” option3=”3-wire distribution system, balancer fields are cross-connected in order to A. boost the generated voltage B. balance loads on both sides of the neutral C. make both machine^ run as unloaded motors” option4=”equalize voltages on the positive and negative outers” correct=”option2″]
45. A circuit is disconnected by isolators when
[amp_mcq option1=”Line is energized” option2=”There is no current in the line” option3=”Line is on full load” option4=”Circuit breaker is not open” correct=”option1″]
Detailed SolutionA circuit is disconnected by isolators when
46. Transmission voltage of ll kV is normally used for distances upto
[amp_mcq option1=”20 – 25 km” option2=”40 – 50 km” option3=”60 – 70 km” option4=”80 – 100 km” correct=”option1″]
Detailed SolutionTransmission voltage of ll kV is normally used for distances upto
47. On which of the following factors skin effect depends?
[amp_mcq option1=”Frequency of the current” option2=”Size of the conductor” option3=”Resistivity of the conductor material” option4=”All of the above” correct=”option4″]
Detailed SolutionOn which of the following factors skin effect depends?
48. Electromechanical voltage regulators are generally used in
[amp_mcq option1=”Reactors” option2=”Generators” option3=”Transformers” option4=”All of the above” correct=”option4″]
Detailed SolutionElectromechanical voltage regulators are generally used in
49. The angular displacement between two interconnected stations is mainly due to
[amp_mcq option1=”Armature reactance of both alternators” option2=”Reactance of the interconnector” option3=”Synchronous reactance of both the alternators” option4=”All of the above” correct=”option4″]
Detailed SolutionThe angular displacement between two interconnected stations is mainly due to
50. 310 km line is considered as
[amp_mcq option1=”A long line” option2=”A medium line” option3=”A short line” option4=”Any of the above” correct=”option1″]