Ramsay Test Logical Thinking & Problem Solving 5

Question 1

A maintenance technician follows this decision rule: 'Replace a component only if ALL three conditions are true: vibration exceeds 0.8 in/s, temperature exceeds 180°F, AND runtime exceeds 5,000 hours.' A motor reads 0.9 in/s vibration, 175°F, and 6,200 hours. What is the correct action?

Accepted Answer

Do not replace — not all conditions are met

Answer

The rule requires ALL three conditions to be true simultaneously. Temperature is 175°F, which does NOT exceed the 180°F threshold. Since one condition fails, the conjunction is false and replacement is not warranted — even though the other two conditions are met.

Question 2

A plant has four pumps: W, X, Y, and Z. The logic controller starts the standby pump whenever the running pump's output drops below 60 PSI. Pump W drops to 55 PSI, so X starts. X then drops to 58 PSI. Pump Y starts. Y maintains 65 PSI. Which pumps are running at the end of this sequence?

Accepted Answer

W, X, and Y

Answer

The logic starts a standby pump when output drops below 60 PSI, but there is no rule that stops the original pump. W dropped to 55 PSI (X started), X dropped to 58 PSI (Y started), Y holds at 65 PSI. None of W or X were shut down by the described logic, so all three — W, X, and Y — remain running.

Question 3

A fault matrix shows: Fault A causes symptoms 1 and 3. Fault B causes symptoms 2 and 3. Fault C causes symptoms 1 and 2. A machine presents symptoms 1, 2, and 3 simultaneously. Which conclusion is best supported?

Accepted Answer

At least two faults are present, and multiple combinations are possible

Answer

Symptom set {1,2,3} can be explained by A+B (covers 1,3 and 2,3), A+C (covers 1,3 and 1,2), B+C (covers 2,3 and 1,2), or A+B+C. No single fault covers all three symptoms, so at least two faults must be present — but the data alone cannot uniquely identify which combination is occurring.

Question 4

Five switches (1–5) control a conveyor segment. The conveyor runs ONLY when an odd number of these switches are ON. Currently switches 1, 2, and 4 are ON (conveyor running). A technician must turn ON switch 5 for a safety interlock test. What is the minimum additional change needed to keep the conveyor running?

Accepted Answer

Turn OFF any one of switches 1, 2, or 4

Answer

Currently 3 switches are ON (odd → conveyor runs). Turning ON switch 5 brings the total to 4 (even → conveyor stops). To restore an odd count while keeping switch 5 ON, the technician must turn OFF exactly one of the currently ON switches (1, 2, or 4), returning the total to 3.

Question 5

A troubleshooting flowchart has this structure: Step 1 — Check fuse (blown → replace and TEST; good → go to Step 2). Step 2 — Check voltage at terminal (absent → go to Step 4; present → go to Step 3). Step 3 — Check motor winding resistance (high → replace motor; normal → go to Step 5). Step 5 — Replace control board. A technician finds: fuse good, voltage present, winding resistance normal. Which component does the chart direct him to replace?

Accepted Answer

The control board

Answer

Tracing the logic: fuse good → Step 2; voltage present → Step 3; winding resistance normal → Step 5 → Replace control board. The flowchart systematically eliminates the fuse, upstream wiring, and motor, leaving the control board as the directed replacement.

Ramsay Test Practice Test

Ramsay Test Practice Test

Ramsay Test Logical Thinking & Problem Solving 5