Question Bank • QB_FP_139 MCQ • 1 Mark

Section 3: Farm Power

Farm Power

Subtopic: I.C. engine cycles

Question Statement:

According to workplace noise safety standards (OSHA / ISO), an operator exposed to continuous machinery sound level of $90\text{ dBA}$ has a permissible maximum daily exposure duration of:

Options:

  • (A) 8 hours
  • (B) 4 hours
  • (C) 2 hours
  • (D) 1 hour

Answer Key:

A

Step-by-Step Solution & Explanation

The OSHA permissible noise exposure threshold establishes $90\text{ dBA}$ for a standard 8-hour workday, with a 5-dB exchange rate (e.g., 95 dBA for 4 hours, 100 dBA for 2 hours).
← Previous (QB_FP_091) Next (QB_FP_147) →

Practice In Authentic CBT Exam Interface

Test your skills under authentic timed conditions with live scoring and AIR percentile ranking.

Launch CBT Mock Test