Title: Op Amps Basics Test
Course: Electronics Theory (IC 102-IC 102) > Section: Assessments

Q: Op-amps can be used to amplify DC signals or AC signals.
- True
- False
A: True

Q: Op-amps can compare two quantities to see which is greater.
- True
- False
A: True

Q: Op-amps have low voltage gain, which make them useful as amplifiers.
- True
- False
A: False

Q: The schematic symbol for the op-amp is a rectangle?
- True
- False
A: False

Q: An operational amplifier schematic symbol has an input labeled (-). This label refers to the . . .
- non-inverting input
- inverting input
- input for positive feedback
A: non-inverting input

Q: Connecting the output to it's inverting input of an op-amp is called . . .
- negative feedback
- positive feedback
- biasing
- cannot be done it will destroy the op-amp
A: negative feedback

Q: If a sine-wave signal is applied to the + (plus) input of the op-amp the output will be . . .
- half the amplitude of the input signal
- twice the amplitude of the input signal
- in phase with the input signal
- out of phase with the input signal
A: half the amplitude of the input signal

Q: One way to increase bandwidth in an op-amp is to
- use positive feedback to increase output
- reduce the offset voltage
- increase bias current
- use negative feedback to reduce output
- run op-amp in open-loop configuration
A: use positive feedback to increase output

Q: The op-amp circuit has . . .
- high input and low output impedence
- low input and low output impedence
- high input and high output impedence
- high input and infinite output impedence
A: high input and low output impedence

Q: The output of a differential amplifier is proportional to the _______________ the two input signals.
- difference between
- sum of
- output is not effected by input
A: difference between

Q: The same voltage or signal is applied to both the inverting and non-inverting inputs, this is referred to as . . .
- saturating
- common mode input
- differential mode input
- can't apply signal in this method
A: saturating

Q: The terminology "Close Loop" means that . . .
- the output is fed back to the input through a neutralization capacitor
- the output is placed at DC ground
- the output is fed back to the input through a resistor
- tow 9 volt batteries are used as the supply voltage
A: the output is fed back to the input through a neutralization capacitor

Q: The voltages required for the operation of an op-amp are . . .
- plus and plus DC with respect to ground
- minus and minus DC with respect to ground
- plus and minus DC with respect to ground
- plus and minus AC with respect to ground
A: plus and plus DC with respect to ground

Q: When a common voltage is applied to each of the inputs (inverting and non-inverting) the output voltage
- is negative
- is positive
- is saturated
- is zero
A: is negative

Q: The output of a non-inverting op-amp is _________ volts when 0.5 volts is applied to the input, the feed back resistor is 50K ohms and the other resistors are 5K ohms.
A: 5.5V