MCQ Practice Question

Electronic Devices & Circuits Operational Amplifiers

CMRR of an operational amplifier measures its ability to?

AAmplify common-mode signals strongly
BReject common-mode signals relative to differential signals
CGenerate clock pulses
DIncrease output resistance

Correct Answer: B. Reject common-mode signals relative to differential signals

Explanation: Common-mode rejection ratio compares differential gain with common-mode gain; a high CMRR indicates strong rejection of signals common to both inputs.

Reference: Standard analog electronics: op-amp CMRR