Choose the one word substitute for the below sentence. John asked his neighbor, a person who repairs and maintains machines called?
Mechanic
The sentence asks for a single noun that names a person whose job is to repair and maintain machines, so this is a one-word-substitution task where the exact scope of the word matters.
The key test is which occupation is defined specifically by hands-on repair and upkeep of machinery rather than by design, general technical support, or mere use.
A mechanic is exactly a skilled worker who services, repairs and maintains machines and engines, especially in vehicles and workshops, which matches every part of the definition.
A technician is broader: someone trained in the practical details of any technical field (lab, IT, audio), not specifically a machine-repairer.
An engineer chiefly designs, plans and builds systems and machines; repairing them is not the defining role.
An operator only runs or controls a machine while it works and need not know how to fix it, so it fails the 'repairs' part.
Since only one word denotes the repair-and-maintenance role precisely, the correct one-word substitute is Mechanic.
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Important Questions from One Word Substitution
For the expression which has been underlined in each of the following sentences, choose the response (a), (b), (c) or (d) which most nearly expresses its meaning.
The institution decided to give Mrs. Roy’s job to her son not because she was a social worker, but because she haddied in harness.
For the expression which has been underlined in each of the following sentences, choose the response (a), (b), (c) or (d) which most nearly expresses its meaning.
Your ambition should be inconsonance withyour capabilities.
For the expression which has been underlined in each of the following sentences, choose the response (a), (b), (c) or (d) which most nearly expresses its meaning.
I could not go up in lifefor want ofproper guidance.
For the expression which has been underlined in each of the following sentences, choose the response (a), (b), (c) or (d) which most nearly expresses its meaning.
Though he was arrogant, I could notdispense withhis services.
For the expression which has been underlined in each of the following sentences, choose the response (a), (b), (c) or (d) which most nearly expresses its meaning.
In spite of his hard work, he wasmade a scapegoatfor the failure of the project
