Error Detection Maintenance & Mechanics 1 Flashcards
6 cards from real USPS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Error Detection Maintenance & Mechanics 1 flashcards as text
Which of the following sentences contains an error?
Answer: The gear assembly was replaced because its teeth had became worn beyond tolerance.
Option C contains a verb form error. 'Had became' is incorrect; the past participle of 'become' is 'become,' so the correct phrase is 'had become.'
Which of the following sentences contains an error?
Answer: Loose bolts on the conveyor frame was tightened during the overnight maintenance window.
Option B has a subject-verb agreement error. The subject 'bolts' is plural, so the verb should be 'were tightened,' not 'was tightened.'
Which of the following sentences contains an error?
Answer: The technician drained the hydraulic fluid, replaced the filter, and refilling the reservoir.
Option A has a faulty parallel structure. The series uses past tense verbs ('drained,' 'replaced'), so the final item should be 'refilled,' not 'refilling.'
Which of the following sentences contains an error?
Answer: The maintenance team follow a strict protocol when servicing high-voltage equipment.
Option B has a subject-verb agreement error. 'Team' is a singular collective noun, so the correct verb is 'follows,' not 'follow.'
Which of the following sentences contains an error?
Answer: Technicians whom perform repairs on electrical systems must hold valid certifications.
Option B incorrectly uses 'whom' where 'who' is needed. Because the pronoun is the subject of the verb 'perform,' the subjective case 'who' is correct.
Which of the following sentences contains an error?
Answer: Each mechanics tool bag is inspected for completeness at the start of every shift.
Option C is missing a possessive apostrophe. The bag belongs to the mechanic, so it should read 'mechanic's tool bag,' not 'mechanics tool bag.'