ExxonMobil Test ExxonMobil Sample 5

Question 1

A compressor increases gas pressure from 14.7 psia to 88.2 psia. What is the compression ratio?

Accepted Answer

6:1

Answer

Compression ratio = 88.2 ÷ 14.7 = 6.

Question 2

Which of the following BEST defines 'inherent safety' in process design?

Accepted Answer

Eliminating hazards by design rather than controlling them with add-on safety systems

Answer

Inherent safety removes the hazard at the source through design choices, making it the most robust risk reduction method.

Question 3

If the price of natural gas is $3.20 per MMBtu and a plant uses 2,500 MMBtu per day, what is the weekly fuel cost?

Accepted Answer

$56,000

Answer

Daily cost = 3.20 × 2,500 = $8,000; weekly = 8,000 × 7 = $56,000.

Question 4

A passage states: 'Carbon capture technologies can reduce CO₂ emissions from industrial processes by up to 90%.' Which conclusion is MOST supported?

Accepted Answer

Carbon capture is one of the more effective tools available for industrial emissions reduction.

Answer

'Up to 90%' reduction makes carbon capture a highly effective tool, but the passage does not claim it is universal or complete.

Question 5

A belt drive connects a motor pulley (diameter 10 in) to a driven pulley (diameter 25 in). If the motor runs at 1,500 RPM, what is the speed of the driven pulley?

Accepted Answer

600 RPM

Answer

Speed ratio is inverse to pulley diameter ratio: 1,500 × (10/25) = 600 RPM.

ExxonMobil Test Practice Test

ExxonMobil Test Practice Test

ExxonMobil Test ExxonMobil Sample 5