Q. Input impedance of a system is 50 Ω, for the system to be negative feedback, which of the following can be its input impedance without feedback?

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Q. In a feedback gain equation, what does the term β stands for?

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Q. In which of the following conditions, feedback gain (Af) become independent of forward gain (A)?

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Q. Inverse transducers are also known as _________________

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Q. A system with feedback loop doesn’t have ______________

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Q. Which of the following represents torque produced in a PMMC device?

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Q. Inverse transducer is system which converts _________________

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Q. In a PMMC device what change will happen to torque, if flux density increased?

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Q. PMMC devices are converters of _____________

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Q. In PMMC device, torque and number of turns have _______________

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Q. Which of the following is an inverse transducer _____________

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Q. Input transducers and inverse transducers are the same.

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Q. Which of the following cannot act as inverse transducer?

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Q. Internal temperature of a hot body is measured by measuring __________________

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Q. Temperature gradient of a substance is _________________

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Q. Feedback system is used to ____________

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Q. If temperature T₁ of material A is equal to temperature T₂ of material B, then which of the following are correct?

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Q. Which of the following represents closed loop thermal control?

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Q. Which of the following true for temperature gradient?

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Q. Which of the following represents unit for temperature gradient?

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