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SarkariResultOutAdditional Assistant Engineer (Electrical) · 2026

Previous Year Question

In commercial electrical installations, the concept of load diversity is important in order to:
  1. Optimize the overall design and utilization of the system
  2. Reduce the safety level of the installation
  3. Increase the operating voltage of the system
  4. Increase the power losses in the system

Correct answer: A

Explanation

Not all connected loads operate at maximum demand at the same time. Applying load diversity therefore prevents unnecessary oversizing and improves economic utilization of feeders, switchgear and transformers while maintaining safety.

Formula

Diversity factor = Sum of individual maximum demands / Maximum demand of the group

Step-by-step solution

Diversity in Commercial Installations explanatory diagram

Correct Answer

A — Optimize the overall design and utilization of the system

Explanation

Not all connected loads operate at maximum demand at the same time. Applying load diversity therefore prevents unnecessary oversizing and improves economic utilization of feeders, switchgear and transformers while maintaining safety.

Key Concept

Diversity in Commercial Installations

Formula

Diversity factor = Sum of individual maximum demands / Maximum demand of the group

Exam Point

Diversity recognizes non-coincident peaks.

Exam tip

Diversity recognizes non-coincident peaks.

Quick method

Diversity recognizes non-coincident peaks.