The maximum acceleration which is experienced by the ground during shaking is known as
- AShaking acceleration
- BPeak ground accelerationCorrect
- CRadar acceleration
- DSky acceleration
Solution
Concept
Peak ground acceleration is the maximum ground motion acceleration during an earthquake.
Step-by-step solution
1. Identify the term defined as the maximum ground acceleration during shaking. 2. The largest value of acceleration recorded on the ground during earthquake shaking is called Peak Ground Acceleration (PGA). Answer: (B) Peak ground acceleration
Explanation
Peak Ground Acceleration (PGA) measures the maximum acceleration of the ground during earthquake shaking. It shows how strongly the earth shakes at a specific site. Engineers use PGA to design earthquake-resistant structures.
Why the other options are wrong
A: This is not a standard technical term in earthquake engineering. C: Radar acceleration is unrelated to ground shaking. D: Sky acceleration is a meaningless term in earthquake engineering.
Shortcut
Peak means maximum. So peak ground acceleration is the maximum ground acceleration.
Common mistake
Confusing earthquake magnitude with ground shaking acceleration.
Correct answer: B) Peak ground acceleration