On which of the following factors skin effect depends?
On which of the following factors skin effect depends?
A. Frequency of the current
B. Size of the conductor
C. Resistivity of the conductor material
D. All of the above
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For transmission of power over a distance of 200 km, the transmission voltage should be_________kv?
For transmission of power over a distance of 200 km, the transmission voltage should be_________kv?
A. 132 kV
B. 66 kV
C. 33 kV
D. 11 kVThe power transmitted will be maximum when____________?
The power transmitted will be maximum when____________?
A. corona losses are minimum
B. reactance is high
C. sending end voltage is more
D. receiving end voltage is moreThe operating voltage of extra high tension cables is upto_______________?
The operating voltage of extra high tension cables is upto_______________?
A. 6.6 kV
B. 11 kV
C. 33 kV
D. 66 kV
E. 132 kVBy which of the following a bus-bar is rated?
By which of the following a bus-bar is rated?
A. Current only
B. Current and voltage
C. Current, voltage and frequency
D. Current, voltage, frequency and short time currentWhich of the following is the demerit of a ‘constant voltage transmission system’ ?
Which of the following is the demerit of a ‘constant voltage transmission system’ ?
A. Increase of short-circuit current of the system
B. Availability of steady voltage at all loads at the line terminals
C. Possibility of better protection for the line due to possible use of higher terminal reactants
D. Improvement of power factor at times of moderate and heavy loads
E. Possibility of carrying increased power for a given conductor size in case of long-distance heavy power transmissionThe material generally used for armour of high voltage cables is_____________?
The material generally used for armour of high voltage cables is_____________?
A. aluminium
B. steel
C. brass
D. copper