Which of following relations is true, considering illumination?

This question was previously asked in
MPPGCL JE Electrical 28 April 2023 Shift 1 Official Paper
View all MPPGCL Junior Engineer Papers >
  1. Depreciation factor = \(\frac{1}{\text { Maintenance factor }}\)
  2. Depreciation factor = 1 + maintenance factor
  3. Depreciation factor = maintenance factor 
  4. Depreciation factor = 1 - maintenance factor

Answer (Detailed Solution Below)

Option 1 : Depreciation factor = \(\frac{1}{\text { Maintenance factor }}\)
Free
MPPGCL JE Electrical Full Test 1
3.9 K Users
100 Questions 100 Marks 120 Mins

Detailed Solution

Download Solution PDF

Maintenance factor

The maintenance factor is defined as the ratio of the illumination under normal working conditions to the illumination when the things are perfectly clean.

Normally, the value of the maintenance factor is less than unity, and in practice, it will be around 0.8

Depreciation factor

It is the inverse of the maintenance factor.

\(DF={1\over MF}\)

\(DF={1\over Less \space than \space 1}\)

DF = More than 1

∴ The value of the depreciation factor is more than unity.

Latest MPPGCL Junior Engineer Updates

Last updated on May 29, 2025

-> MPPGCL Junior Engineer result PDF has been released at the offiical website.

-> The MPPGCL Junior Engineer Exam Date has been announced.

-> The MPPGCL Junior Engineer Notification was released for 284 vacancies.

-> Candidates can apply online from 23rd December 2024 to 24th January 2025.

-> The selection process includes a Computer Based Test and Document Verification.

-> Candidates can check the MPPGCL JE Previous Year Papers which helps to understand the difficulty level of the exam.

More Illumination Questions

Get Free Access Now
Hot Links: teen patti real cash 2024 teen patti go teen patti bonus