HI Gradians,
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
Ans. D
2. Earth wire is connected to the
A. Transformer B. Power house
C. Common point D. Ground
Ans. D
3. What is the earthing resistance for small substation?
A. 5 Ω B. 0.5 Ω
C. 10 Ω D. 2 Ω
Ans. D
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
Ans. A
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
Ans. C
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