Lightning arrester | Lightning arrester Objective Type Questions and answers
41. Lightning arresters are used in power system to protect electrical equipments against
A. Direct strokes of lightning
B. over voltages due to indirect lightning stroke
C. Power frequency over-voltages
D. Over currents due to lightning
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C. Power frequency over-voltages
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42. A lightning arrester provides
A. Low impedance path
B. High impedance path
C. Low resistance path
D. High resistance path between line and earth during operation
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43. A lightning arrester connected between the line and earth in a power system
A. Protects the terminal equipment against travelling surges
B. Protects the terminal equipment against direct lightning stroke
C. Suppresses high-frequency oscillations in the line
D. Reflects back the travelling waves approaching it
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44. Basically a lightning arrester is a
A. Surge diverter
B. Surge alternator
C. Surge reflector
D. Surge absorber
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45. Which system will need the lightning arrester of least voltage rating?
A. Solid ground neutral system
B. Insulated neutral system
C. Resistance grounded neutral system
D. Reactance grounded neutral system
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