1. . Operational amplifier is also known as
(A) Class B amplifier
(B) Class A amplifier
(C) Summing amplifier
(D) Power amplifier
2. . Which statement about an operational amplifier is incorrect?
(A) Its input resistance is very high
(B) Its output resistance is very low
(C) Its bandwidth is narrow
(D) Its gain is very high
3. . Bandwidth of ideal operational amplifier is ________?
(A) Zero
(B) Very low
(C) Infinite
(D) None of above
4. . The operational amplifier can amplify
(A) DC signals only
(B) AC signals only
(C) None of the above
(D) Both AC and DC signals
5. . The gain of an ideal operational amplifier is around
(A) 100
(B) 1000
(C) 1,000,000
(D) 5000
6. . The output impedance of practical operational amplifier is
(A) Very low
(B) Infinity
(C) Very high
(D) Zero
7. . Operational amplifier has ________ input terminals
(A) Six
(B) Four
(C) Two
(D) One
8. . Ratio of differential gain to the common mode gain in an operational amplifier is
(A) CMMR
(B) CCMR
(C) CMRR
(D) CMRC
9. . A voltage follower has ________.
(A) Voltage gain equal to 1
(B) Non-inverting configuration
(C) No feedback resistor
(D) All of these characteristics