On a scale of one to ten, rate me as an interviewer.

I think I'm not the right person to give the rate of you because I'm a fresher I don't have any experience you have more knowledge and also experience if you want my rank I give 9 because every brilliant makes mistake and coin as both sides.

As a fresher, I can't judge you sir. Nobody is perfect in this world glad to meet you, sir.

I think I am not a right person to rate you. And, I will give you 9 out of 10 because no one in this world is 100% perfect.

Read most of the answer here and most of them starts with that you are not qualified enough to rate them. The trick to this question is not to please the interviewer, as most of them will do that. But it is to show your confidence and honesty. You can give any rating to the interviewer, but the reasoning should be unique and genuine.

Example:

It was pleasant talking to you. I was nervous when I entered, but I am not now. Rather I am confident. Thank you for being so understanding and calm. And this is the reason, I would give you a perfect 10.

(OR)

I have been to many interviews and surprisingly, I have met many such interviewers who do not have the right knowledge to judge the candidate. I was glad to see someone competent and knowledgeable like you interviewing me. I would give you a 9 on 10. However, I would like to ask you a question with your permission. When you ask candidates (write any question you didn't really see the point in), what are you expecting? [This answer is given when the interview has ended].

Thank you, sir for giving me these opportunities but I don't have a special ability of hr which require to judging people but you asked me so I give you 9 out of 10 because nobody is perfect in these worlds.

Sir, I think I am not the right person to rate you as you have more knowledge and experience. But from the last 30 min interaction, you deserve 10/10.

I'm sorry Sir! I'm not in the position to rate you as you're an higher authority and you are much great in knowledge and experience.

But if this is a part of my interview, I'll rate you 9/10 because no one on this earth is perfect.

Sir, I think I'm not the right person who can judge you. You have more knowledge that's why you're here. But I feel good about interacting with you.

Sir, according to me you seem to be a perfect interviewer but I will give you 9, not 10 because 100% mark sounds like fake especially in engineering.

As this is my first interview experience I think I'm not eligible to judge you but I can say you are very interactive and encouraging.

Probably you are best in interviewing so that is the reason your company sends you here. You might have years of experience in this field, so I rate you with 9/10.