Do you Know in Buildings
According to Indian Electricity Rule, on Sub - Circuit can accommodate maximum of 10 points.
But Total connected load should not exceed 800W
According to Indian Electricity Rule, on Sub - Circuit can accommodate maximum of 10 points.
But Total connected load should not exceed 800W
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What is the significance of the Short Circuit Ratio (SCR) in substation design?
Anonymous Quiz
5%
a) It determines the transformer cooling method
47%
b) It indicates the stability of the grid at the point of connection
37%
c) It measures the insulation level of busbars
11%
d) It defines the grounding resistance
Electrical Design Engineering
What is the maximum allowable voltage drop for a feeder circuit as per the National Electrical Code (NEC) under normal conditions?
In NEC Article 215.2(A)(1), Informational Note No. 1 suggests that for feeders, the voltage drop should generally be limited to 3% under normal operating conditions. This is to ensure efficient operation of the electrical equipment. Additionally, when combined with branch circuits, the total voltage drop (feeder plus branch circuit) should not exceed 5% from the supply side to the point of utilization (see NEC 210.19(A), Informational Note No. 4 for branch circuits, which aligns with this concept).
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A load draws 50 kVAR of reactive power and 100 kW of real power. What is the apparent power of the load?
Anonymous Quiz
26%
A) 150 kVA
52%
B) 111.8 kVA
13%
C) 75 kVA
9%
D) 100 kVA.
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Power Cable Splicing and termination .pdf
3.6 MB
Power Cable Splicing and termination .pdf
In a 220 kV substation, what is the typical Basic Insulation Level (BIL) required?
Anonymous Quiz
31%
a) 350 kV
39%
b) 650 kV
24%
c) 1050 kV
6%
d) 1550 kV
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Accessoires on distribution Pole
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Which type of insulation coordination study is critical for substation design?
Anonymous Quiz
14%
a) Thermal analysis
52%
b) Lightning and switching surge analysis
10%
c) Harmonic analysis
24%
d) Load flow analysis
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In a Gas Insulated Substation (GIS), what is the primary reason for using SF6 gas over air as an insulating medium?
Anonymous Quiz
2%
a) Lower cost
86%
b) Higher dielectric strength and smaller equipment size
7%
c) Better thermal conductivity
5%
d) Reduced maintenance
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Which fault type requires the highest interrupting capacity in a substation circuit breaker?
Anonymous Quiz
25%
a) Single line-to-ground fault
15%
b) Line-to-line fault
50%
c) Three-phase fault
11%
d) Double line-to-ground fault