Power System, Transmission & Distribution Test Questions Start Creating PDF
Power System, Transmission & Distribution Test Questions, this topic has 238 mcqs, It takes five to ten minutes to complete this free power system, transmission & distribution test questions test. You will see 4 or 5 option of each question. You must choose / think only one option and then press on answer key for check right answer. Practice "power system, transmission & distribution test questions" MCQs and share with your friends, brothers, sisters.
power system, transmission & distribution test questions (Total Quiz: 238)
MCQ: What is the safe working temperature for a conductor in case of armoured cables?
- 50° C
- 75° C
- 65° C
- 40° C
MCQ: The capacitances of a 3 phase belted cable are 12.6 μ F between the three cores bunched together and the lead sheath and 7.4 μ F between one core and the other two connected to sheath. What will be the charging current drawn by the cable when connected to a 66 kV supply?
- 100 A
- 99.3648 A
- 105.236 A
- 107.74 A
MCQ: What is the source of heat generation in cables?
- Copper loss in conductor
- Dielectric losses in cable insulation
- Losses in metallic sheathings and armouring
- All of these
MCQ: In a 3 core cable, the capacitance between two conductors is 3 μF. What will be the capacitance per phase?
- 1.5 μ F
- 3 μ F
- 6 μ F
- 12 μ F
MCQ: What does capacitance grading of cables mean?
- Use of dielectrics in different concentrations
- Introduction of capacitance at various lengths of cable to counter the effect of inductance
- Use of dielectrics of different permittivities
- Grading according to capacitance per km length of the cable
MCQ: What will be the most economical value of diameter of a single core cable to be used on 50 kV, single phase system, when the maximum permissible stress is not exceeding 50 kV / cm?
- 2.52 cm
- 2.828 cm
- 3.52 cm
- 3.82 cm
MCQ: What will be the insulation thickness for a conductor of diameter 2 cm, with maximum and minimum stress 40 kV / cm rms and 10 kV / cm rms respectively?
- 5 cm
- 3 cm
- 2 cm
- 4 cm
MCQ: What is the maximum stress in the insulation for a 33 kV single core cable with a diameter of 1 cm and a sheath of inside diameter 4 cm?
- 50.61 kV / cm rms
- 45.231 kV / cm rms
- 47.61 kV / cm rms
- 49.231 kV /cm rms
MCQ: What is the total charging current per phase for a 33 kV, 50 Hz, 3 phase underground cable of 4 km length using 3 single core cables? Each conductor has a diameter of 2.5 cm and the radial thickness of insulation is 0.5 cm.
- 15.28 A
- 11.87 A
- 13.85 A
- 8.25 A
MCQ: A single core cable has a conductor diameter of 1 cm and the internal sheath diameter of 1.8 cm. If impregnated paper of relative permittivity 4 is used as the insulation, calculate the capacitance for 1 km length of cable?
- 0.378 μ F
- 0.257 μ F
- 0.549 μ F
- 0.78 μ F
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