You have completed the syllabus of the SSC JE exam for Estimation & Costing. Now BYJU'S Exam Prep brings you the 100 most important questions of the Power Systems.
Here you will find the 100 most important questions for the Estimation & Costing subject of the Electrical Engineering syllabus. The top 5 questions are attached here rest questions you can find in the below pdf.
Common 100 Question PDF of subject Estimation & Costing and Utilization of Electrical Energy for Electrical Engineering
1. The blinking of fluorescent tube may be due to:
A. Low circuit voltage B. Loose contacts
C. Defective starter D. All of these
2. Earth wire is connected to the
A. Transformer B. Power house
C. Common point D. Ground
3. What is the earthing resistance for small substation?
A. 5 Ω B. 0.5 Ω
C. 10 Ω D. 2 Ω
4. What the cross section dimension for strip earthing
A. 25 × 4 mm2 B. 25 × 4 cm2
C. 20 × 20 mm2 D. 20 × 20 cm2
5. What is the maximum length of the flexible conduit in motor installation?
A. Less than 3.5 m B. Less than 2.25 m
C. Less than 1.25 m D. Can exceed not more than 5 m
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