SarkariResultOutAdditional Assistant Engineer (Electrical) · 2026

Previous Year Question

What is the purpose of the Time Multiplier Setting (TMS) in an overcurrent relay?

To increase the sensitivity of the relay
To change the current rating of the relay
To change the pickup value of the relay
To adjust the operating time of the relay

Correct answer: D

Explanation

TMS scales the operating time of an inverse-time overcurrent relay without changing its pickup-current setting. A lower TMS gives faster operation for the same multiple of pickup current.

Step-by-step solution

Time Multiplier Setting (TMS) explanatory diagram

Correct Answer

D — To adjust the operating time of the relay

Explanation

TMS scales the operating time of an inverse-time overcurrent relay without changing its pickup-current setting. A lower TMS gives faster operation for the same multiple of pickup current.

Key Concept

Time Multiplier Setting (TMS)

Exam Point

Plug setting sets pickup; TMS sets time.

Common Mistake

Do not confuse TMS with current/pickup setting.

Common mistake

Do not confuse TMS with current/pickup setting.

Exam tip

Plug setting sets pickup; TMS sets time.

Quick method

Plug setting sets pickup; TMS sets time.