ExxonMobil Test ExxonMobil Problem Solving 2

Question 1

You are given data: Plant A produces 500 units with 10 defects; Plant B produces 800 units with 14 defects. Which plant has a better defect rate?

Accepted Answer

Plant B, with 1.75% defect rate

Answer

Plant A: 10/500 = 2.0%; Plant B: 14/800 = 1.75%; Plant B has a lower defect rate.

Question 2

A safety audit finds 3 critical, 7 major, and 12 minor non-conformances. Using risk prioritization, which should be addressed first?

Accepted Answer

The 3 critical findings, as they pose the greatest risk

Answer

Risk-based prioritization always addresses critical findings first because they pose the greatest potential for harm.

Question 3

A control room operator observes two alarms simultaneously: high pressure in Vessel A and low level in Vessel B. These vessels are connected by a transfer line. What is the most logical conclusion?

Accepted Answer

The transfer line between the vessels is blocked or closed

Answer

Simultaneous high pressure in the sending vessel and low level in the receiving vessel strongly suggests the transfer line is blocked or the valve is closed.

Question 4

Production costs are: labor $120,000, materials $340,000, overhead $90,000, and energy $50,000. If a 15% cost reduction is required, which area should be prioritized?

Accepted Answer

Materials, as it is the largest cost component

Answer

Materials at $340,000 is the largest cost component; a 15% reduction in materials yields the greatest absolute savings.

Question 5

An ExxonMobil manager must choose between two projects. Project X has NPV of $2.1M with 70% probability of success; Project Y has NPV of $3.5M with 40% probability. Which has the higher expected value?

Accepted Answer

Project X, with expected value of $1.47M

Answer

Project X: $2.1M × 0.70 = $1.47M; Project Y: $3.5M × 0.40 = $1.4M; Project X has a higher expected value.

ExxonMobil Test Practice Test

ExxonMobil Test Practice Test

ExxonMobil Test ExxonMobil Problem Solving 2