If a flow control valve reduces flow from 120 gpm to 60 gpm with the same upstream pressure, what is the percent reduction in flow?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Prepare for the Valero Mechanical Aptitude Test with comprehensive study materials. Enhance your skills with flashcards, hints, and detailed explanations. Ace your exam with confidence!

Multiple Choice

If a flow control valve reduces flow from 120 gpm to 60 gpm with the same upstream pressure, what is the percent reduction in flow?

Explanation:
When measuring how much a quantity decreases in percent, compare the drop to the original amount. percent reduction = (original - new) / original × 100%. Here the flow goes from 120 gpm to 60 gpm, a drop of 60 gpm. So (120 - 60) / 120 × 100% = 60 / 120 × 100% = 50%. Since the upstream pressure is the same, the change is entirely due to the flow decrease. A 50% reduction means the flow is halved; the other options would correspond to different amounts of drop (for example, a 25% reduction would be a 30 gpm drop, etc.).

When measuring how much a quantity decreases in percent, compare the drop to the original amount. percent reduction = (original - new) / original × 100%. Here the flow goes from 120 gpm to 60 gpm, a drop of 60 gpm. So (120 - 60) / 120 × 100% = 60 / 120 × 100% = 50%. Since the upstream pressure is the same, the change is entirely due to the flow decrease. A 50% reduction means the flow is halved; the other options would correspond to different amounts of drop (for example, a 25% reduction would be a 30 gpm drop, etc.).

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy