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IE Rules : Estimation And Costing MCQ Practice Questions & Answers (Tamil) - ObjectiveMcq

Estimation And Costing Practice

Topics

Costing Methods
- Batch Costing
- Job Costing
Energy Conservation Building Code
Estimation Of Lighting Scheme
IE Rules

PracticeEstimation And CostingIE Rules

IE Rules in Estimation And Costing : Practice MCQ Questions & Answers with Explanations

1 practice sets · Page 1 of 1

Estimation And CostingMediumIE RulesLeakage Current

1.

What will be the value of leakage current through wire in a residential building with supply voltage of 240 volts, if a building wiring consists of 10 points of 100-watt lamps and 7 fans of 200 watts each?

A

1.5 A

B

2 A

C

10 mA

D

2 mA

Correct Answer:

(D) 2 mA

Explanation:

The correct answer is D: 2 mA.

Total load: P = (10 × 100) + (7 × 200) = 2400 W

Full load current: I = P / V = 2400 / 240 = 10 A

As per IE Rules, maximum permissible leakage current = I / 5000 = 10 / 5000 = 2 mA