These are five sample questions from Bryq’s Field Engineer assessment, a job-specific test for hiring field engineers, field service technicians and maintenance engineers. The full assessment covers five skills: technical expertise, machine troubleshooting, malfunction resolution, safety inspection and equipment maintenance. Questions combine technical calculations and equipment knowledge with realistic on-site scenarios, each with four options to choose from.
Technical Expertise
Question
A hydraulic pump delivers 20 liters per minute at 150 bar. What hydraulic power is it producing? (Formula: Power (kW) = Flow (L/min) × Pressure (bar) ÷ 600)
Select your answer
5 kW
3 kW
0.5 kW
50 kW
WHY IS THIS THE CORECT ANSWER
Using the formula, 20 × 150 ÷ 600 = 5 kW. The divisor converts liters per minute and bar into kilowatts. The 50 kW and 0.5 kW options come from dividing by 60 or 6,000 instead.
Machine Troubleshooting
Question
After an electrical panel is rewired, a three-phase fan motor starts and runs normally but turns in the opposite direction. What is the most likely cause?
Select your answer
Two of the supply phases were swapped.
A failed start capacitor.
Low supply voltage to the motor.
A partially shorted motor winding.
WHY IS THIS THE CORECT ANSWER
A three-phase motor’s direction of rotation depends on the phase sequence of its supply. Swapping any two phases during rewiring reverses it, so the fix is to swap two leads back. Three-phase motors don’t use start capacitors, and winding or voltage faults affect performance, not direction.
Malfunction Resolution
Question
A hydraulic cylinder slowly drifts down under load while the directional valve is centered, and there are no external leaks. What is the most likely fix?
Select your answer
Replace the worn piston seals in the cylinder.
Top up the hydraulic fluid reservoir.
Raise the relief valve pressure setting.
Replace the hoses feeding the cylinder.
WHY IS THIS THE CORECT ANSWER
Drift with no external leakage means fluid is bypassing inside the cylinder, most commonly past worn piston seals. Topping up fluid or raising relief pressure doesn’t stop that bypass, and the hoses aren’t the cause when nothing is leaking externally.
Safety Inspection
Question
During a site visit, you see a contractor working inside an excavation about 2 m deep with vertical, unsupported sides. What should you do?
Select your answer
Have the contractor leave the trench now, then raise it with the site supervisor before work resumes.
Record it in your inspection report as a high-priority finding.
Remind the contractor to work carefully and keep their time in the trench short.
Report the unsupported trench to the site supervisor and ask them to deal with it.
WHY IS THIS THE CORECT ANSWER
Unsupported trench walls can collapse without warning, so the immediate priority is getting the worker out of danger. Escalating to the site supervisor then makes sure shoring or sloping is in place before anyone goes back in. Reporting alone leaves the worker exposed in the meantime.
Equipment Maintenance
Question
What is the main advantage of including vibration analysis in a predictive maintenance program?
Select your answer
It detects developing faults like bearing wear before they cause failure.
It measures the condition of motor insulation.
It sets fixed intervals for replacing components.
It removes the need for routine lubrication.
