What does this machine do? vs What is this machine for?

Both phrases are correct and commonly used in English. They are interchangeable and can be used to inquire about the purpose or function of a machine.

Last updated: March 28, 2024 • 4689 views

What does this machine do?

This phrase is correct and commonly used to inquire about the function or purpose of a machine.

This phrase is used to ask about the specific actions or tasks performed by a machine.

Examples:

What does this machine do? Does it cut or shape the material?
I'm not sure what this machine does. Can you explain its function to me?

Show examples from the web [+]

What does this machine do?
What does this mean for machines?
What? Wait, what does that mean, this machine?
This machine over here is actually two separate two-propeller flying machines.
This machine over here is actually two separate two-propeller flying machines.
This machine is indicated to join continuous sweets production machines.
This machine benefits from many advanced features and functions that have been developed for larger machines.
This machine is indicated to join continuous sweets production machines.
This machine turns out miles of paper.
Your job is to keep this machine running.
This machine monitors his neural patterns.
This machine is a death sentence.
There are actual patients waiting to use this machine.
Somehow this machine synched their brainwaves.
This machine has made democracy possible worldwide.
This machine plays movies like a record.
This machine was later used to print banknotes.
He has been on this machine.
This machine has made democracy possible worldwide.
This machine adopts computer screen displaying the failure instruction.
All revolutions perfected this machine instead of breaking it.

Alternatives:

What is the function of this machine?
What is the purpose of this machine?

What is this machine for?

This phrase is correct and commonly used to inquire about the purpose or function of a machine.

This phrase is used to ask about the intended use or function of a machine.

Examples:

What is this machine for? Is it used for cutting or drilling?
I'm curious, what is this machine for? Can you explain its purpose?

Alternatives:

What does this machine do?
What is the function of this machine?

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What does this machine do? vs What is this machine for?