Q.1:
Calculate the cutoff frequency of a first-order low-pass filter for R1 = 2.5k and C1 = 0.05F___________?l
A.1.273kHz
B.
12.73kHz
C.
127.3 kHz
D.
127.3 Hz
Q.2:
The closed-loop voltage gain of an inverting amplifier equal to______________?N
A.
The ratio of the input resistance to feedback resistance8
B.
The open-loop voltage gain
C.The feedback resistance divided by the input resistance7
D.
The input resistance
Q.3:
A non inverting closed loop op amp circuit generally has a gain factor______________?U
A.
Less than one
B.Greater than one
C.
Of zero
D.
Equal to one
Q.4:
An ideal OP-AMP is an ideal______________?*
A.
Current controlled Current source!
B.
Current controlled voltage source!
C.Voltage controlled voltage source!
D.
voltage controlled current source!
Q.5:
If ground is applied to the (+) terminal of an inverting op-amp, the () terminal will_____________?f
A.
Not need an input resistor
B.Be virtual ground
C.
Have high reverse current
D.
Not invert the signal
Q.6:
The ideal OP-AMP has the following characteristics2
A.Ri= ,A= ,R0=0
B.
Ri=0 ,A= ,R0=0
C.
Ri= ,A= ,R0=
D.
Ri=0 ,A= ,R0=
Q.7:
How many op-amps are required to implement this equationop-amps?@
A.
2
B.
3
C.
4
D.1
Q.8:
How many op-amps are required to implement this equation Vo = V1?A
A.
4
B.
3
C.
2
D.1
Q.9:
An ideal OP-AMP is an ideal__________?&
A.
Current controlled Current source!
B.
Current controlled Voltage source!
C.Voltage controlled Voltage source!
D.
Voltage controlled Current source!
Q.10:
An amplifier using an opamp with slew rate SR=1v/sec has a gain of 40db.If this amplifier has to faithfully amplify sinusoidal signals from dc to 20KHz without introducing any slew-rate induced distortion, then the input signal level exceed_____________?