IndiaBIX

Electronics - Operational Amplifiers

Exercise : Operational Amplifiers - Filling the Blanks
16.

fbq18_1007.gif

The voltage gain of the amplifier in the given circuit would increase if ______.

the feedback resistor was decreased in value
the input voltage was increased
the input resistor was increased in value
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
17.
A virtual ground is a(n) ______ ground because this point is at zero volts.
ordinary
voltage
chassis
earth
Answer: Option
Explanation:
No answer description is available. Let's discuss.
18.
The resistors Rf and Ri in an op-amp circuit control ______ .
positive feedback and current gain
negative feedback and power gain
negative feedback and voltage gain
open and closed loop gain
Answer: Option
Explanation:
No answer description is available. Let's discuss.
19.
______ is NOT a characteristic of an ideal op-amp.
Infinite voltage gain
Minimum bandwidth
Infinite input impedance
Zero output impedance
Answer: Option
Explanation:
No answer description is available. Let's discuss.
20.
Current cannot flow to ground through a(n) ________.
mechanical ground
ac ground
virtual ground
virtual short
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers