An 8-pole alternator is driven by a turbine at a speed of 1200 rpm. What is the frequency of EMF generated?

This question was previously asked in
MPPGCL JE Electrical 28 April 2023 Shift 3 Official Paper
View all MPPGCL Junior Engineer Papers >
  1. 40 Hz
  2. 120 Hz
  3. 80 Hz
  4. 60 Hz

Answer (Detailed Solution Below)

Option 3 : 80 Hz
Free
MPPGCL JE Electrical Full Test 1
100 Qs. 100 Marks 120 Mins

Detailed Solution

Download Solution PDF

Concept

The frequency of EMF induced by the alternator is given by:

where, Ns = Synchronous Speed

f = Frequency

P = No. of poles

Calculation

Given, P = 8

Ns = 1200 rpm

f = 80 Hz

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.

Hot Links: teen patti dhani teen patti master 2025 teen patti refer earn teen patti joy mod apk