Question 1

If an aircraft full- Wave, dc power supply operates from a 400 Hz sineW ave, the ripple frequency is ________.

Accepted Answer

A) 60 Hz 
B) 800 Hz 
C) 120 Hz 
D) 400 Hz 
A) 60 Hz 
B) 800 Hz 
C) 120 Hz 
D) 400 Hz

Question 2

If the measured resistance of a diode is high in both directions, the diode is probably ________.

Accepted Answer

A) reverse biased 
B) open 
C) forward biased 
D) shorted 
A) reverse biased 
B) open 
C) forward biased 
D) shorted

Question 3

\[\text { Figure } 17 D=20 mA in Figure  17-2,VG equals_______

Accepted Answer

A)   0 V 
B)   5 V 
C)   15 V 
D)   10 V 
A)   0 V 
B)   5 V 
C)   15 V 
D)   10 V

Question 4

$$\text { Figure } 17 < 4$$
-Which voltage would indicate that the amplifier in Figure  17-4  is operating in cutoff?

Accepted Answer

A)   VBE=7 V 
B)   VC=18 V 
C)   VBC=9 V 
D)   VCE=9 V 
A)   VBE=7 V 
B)   VC=18 V 
C)   VBC=9 V 
D)   VCE=9 V

Question 5

Positive feedback is defined as feeding back a portion of the output to the input such that:

Accepted Answer

A) it reinforces the signal at the input. 
B) there is no net phase shift. 
C) the two are in phase. 
D) all of these. 
A) it reinforces the signal at the input. 
B) there is no net phase shift. 
C) the two are in phase. 
D) all of these.

Question 6

Beta (β)is the ratio of ________.

Accepted Answer

A) collector current to base current 
B) outputVoltage to inputVoltage 
C) emitter current to base current 
D) collector current to emitter current 
A) collector current to base current 
B) outputVoltage to inputVoltage 
C) emitter current to base current 
D) collector current to emitter current

Question 7

Figure $18 < 1$
-What trouble in the amplifier in Figure 18-1(b) could cause the voltage between the inverting and non-inverting inputs to nearly equal  0 V  ?

Accepted Answer

A)   Ri  is open. 
B)   Rf  is open. 
C)  The power is off. 
D)  There is no problem;  0 V  is normal. 
A)   Ri  is open. 
B)   Rf  is open. 
C)  The power is off. 
D)  There is no problem;  0 V  is normal.

Question 8

A forward-biased silicon diode normally drops about 0.7 V.

Accepted Answer

A) True 
 B)False

Question 9

A forward biased silicon diode is in series with a  12PPP  resistor. The source voltage is  5 V . The voltage across the diode is_______ and the voltage across the resistor is________

Accepted Answer

A)   0.7 V, 4.3 V 
B)   0.3 V, 4.7 V 
C)   4.7 V, 0.3 V 
D)   4.3 V, 0.7 V 
A)   0.7 V, 4.3 V 
B)   0.3 V, 4.7 V 
C)   4.7 V, 0.3 V 
D)   4.3 V, 0.7 V

Question 10

Short-circuit or overload protection is an integral part of

Accepted Answer

A)  most JFETs 
B)  most three-terminal regulators 
C)  most op-amps 
D)  most TRIACs 
A)  most JFETs 
B)  most three-terminal regulators 
C)  most op-amps 
D)  most TRIACs

Question 11

A typical op-amp has ________ input impedance and ________ output impedance.

Accepted Answer

A) low, low 
B) low, high 
C) high, low 
D) high, high 
A) low, low 
B) low, high 
C) high, low 
D) high, high

Question 12

If a half- Wave rectifier outputs 36 VP, the PIV of the diode should be more than ________.

Accepted Answer

A) 29V 
B) 36V 
C) 15V 
D) 116V 
A) 29V 
B) 36V 
C) 15V 
D) 116V

Question 13

In a filter circuit, the terminology single pole means:

Accepted Answer

A) one fixed contact. 
B) one single RC circuit. 
C) one movable contact. 
D) two cascaded RC circuits. 
A) one fixed contact. 
B) one single RC circuit. 
C) one movable contact. 
D) two cascaded RC circuits.

Question 14

$\text { Figure } 16<2$

-Which block in Figure 16-2Will keep the output voltage nearly constant under varying load?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 15

$$\text { Figure } \mathbf { 1 7 } < \mathbf { 1 }$$
-If$$\mathrm { VC } = 20 \mathrm {~V} \text { in Figure } 17 - 1 \text {, which statement describes a possible trouble? }$$

Accepted Answer

A) The amplifier is saturated. 
B) The amplifier is cut off. 
C) The power is off. 
D) This is normal. 
A) The amplifier is saturated. 
B) The amplifier is cut off. 
C) The power is off. 
D) This is normal.

Question 16

In a class A amplifier, the output signal is ________.

Accepted Answer

A) smaller in amplitude than the input 
B) the same shape as the input 
C) clipped 
D) distorted 
A) smaller in amplitude than the input 
B) the same shape as the input 
C) clipped 
D) distorted

Question 17

Which one of these devices produces amplifiers With characteristics close to those of an ideal amplifier?

Accepted Answer

A) Op-amp 
B) BJT 
C) JFET 
D) MOSFET 
A) Op-amp 
B) BJT 
C) JFET 
D) MOSFET

Question 18

\[\text { Figure } 17 G  in Figure  17-2 .

Accepted Answer

A)   5 V 
B)   15 V 
C)   10 V 
D)   0 V 
A)   5 V 
B)   15 V 
C)   10 V 
D)   0 V

Question 19

If $\mathrm { R } _ { \mathrm { i } } = 2.2 \mathrm { k } \Omega , \mathrm { R } _ { f } = 220 \mathrm { k } \Omega$ and AOL=25,000  in an inverting op-amp, ACL  equals_______

Accepted Answer

A)   -250 
B)   -0.01 
C)  100 
D)   -100 
A)   -250 
B)   -0.01 
C)  100 
D)   -100

Question 20

In an inverting input op-amp, differentiator suppliedW ith a ramp or triangularW ave, the output is a:

Accepted Answer

A) opposite phase ramp. 
B) same phase square Wave. 
C) sine Wave. 
D) opposite phase square Wave. 
A) opposite phase ramp. 
B) same phase square Wave. 
C) sine Wave. 
D) opposite phase square Wave.

If an aircraft full- Wave, dc power supply operates from a 400 Hz sineW ave, the ripple frequency is ________.

If the measured resistance of a diode is high in both directions, the diode is probably ________.

$\text { Figure } 17 < 2 -If I<sub>D</sub>=20 mA in Figure 17-2,V<sub>G</sub> equals_______$ $\text { Figure } 17 < 2$ -If I_D=20 mA in Figure 17-2,V_G equals_______

$\text { Figure } 17 < 4 -Which voltage would indicate that the amplifier in Figure 17-4 is operating in cutoff?$ $\text { Figure } 17 < 4$ -Which voltage would indicate that the amplifier in Figure 17-4 is operating in cutoff?

Positive feedback is defined as feeding back a portion of the output to the input such that:

Beta (β)is the ratio of ________.

Figure $18 < 1$ -What trouble in the amplifier in Figure 18-1(b) could cause the voltage between the inverting and non-inverting inputs to nearly equal 0 V ?

A forward-biased silicon diode normally drops about 0.7 V.

A forward biased silicon diode is in series with a 12PPP resistor. The source voltage is 5 V . The voltage across the diode is_ and the voltage across the resistor is__

Short-circuit or overload protection is an integral part of

A typical op-amp has input impedance and output impedance.

If a half- Wave rectifier outputs 36 VP, the PIV of the diode should be more than ________.

In a filter circuit, the terminology single pole means:

$\text { Figure } 16<2 -Which block in Figure 16-2Will keep the output voltage nearly constant under varying load?$ $\text { Figure } 16<2$ -Which block in Figure 16-2Will keep the output voltage nearly constant under varying load?

In a class A amplifier, the output signal is ________.

Which one of these devices produces amplifiers With characteristics close to those of an ideal amplifier?

$\text { Figure } 17 < 2 -Find V<sub>G</sub> in Figure 17-2 .$ $\text { Figure } 17 < 2$ -Find V_G in Figure 17-2 .

If $\mathrm { R } _ { \mathrm { i } } = 2.2 \mathrm { k } \Omega , \mathrm { R } _ { f } = 220 \mathrm { k } \Omega$ and A_OL=25,000 in an inverting op-amp, ACL equals_______

In an inverting input op-amp, differentiator suppliedW ith a ramp or triangularW ave, the output is a:

Quantities and Units

Voltage, Current, and Resistance

Ohms Law, Energy, and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Rc Circuits

Inductors

Rl Circuits

Rlc Circuits and Resonance

Time Response of Reactive Circuits

Transformers

Understanding Transducers, Sensors, and Conversion in Industrial Processes

Filters

Exam 16: Regulators, Filters, and Op-Amps

If an aircraft full- Wave, dc power supply operates from a 400 Hz sineW ave, the ripple frequency is ________.

If the measured resistance of a diode is high in both directions, the diode is probably ________.

Figure 17<2\text { Figure } 17 < 2 Figure 17<2 -If ID=20 mA in Figure 17-2,VG equals_______

Figure 17<4\text { Figure } 17 < 4 Figure 17<4 -Which voltage would indicate that the amplifier in Figure 17-4 is operating in cutoff?

Positive feedback is defined as feeding back a portion of the output to the input such that:

Beta (β)is the ratio of ________.

Figure 18<118 < 118<1 -What trouble in the amplifier in Figure 18-1(b) could cause the voltage between the inverting and non-inverting inputs to nearly equal 0 V ?

A forward-biased silicon diode normally drops about 0.7 V.

A forward biased silicon diode is in series with a 12PPP resistor. The source voltage is 5 V . The voltage across the diode is_______ and the voltage across the resistor is________

Short-circuit or overload protection is an integral part of

A typical op-amp has ________ input impedance and ________ output impedance.

If a half- Wave rectifier outputs 36 VP, the PIV of the diode should be more than ________.

In a filter circuit, the terminology single pole means:

Figure 16<2\text { Figure } 16<2 Figure 16<2 -Which block in Figure 16-2Will keep the output voltage nearly constant under varying load?

In a class A amplifier, the output signal is ________.

Which one of these devices produces amplifiers With characteristics close to those of an ideal amplifier?

Figure 17<2\text { Figure } 17 < 2 Figure 17<2 -Find VG in Figure 17-2 .

If Ri=2.2kΩ,Rf=220kΩ\mathrm { R } _ { \mathrm { i } } = 2.2 \mathrm { k } \Omega , \mathrm { R } _ { f } = 220 \mathrm { k } \OmegaRi​=2.2kΩ,Rf​=220kΩ and AOL=25,000 in an inverting op-amp, ACL equals_______

In an inverting input op-amp, differentiator suppliedW ith a ramp or triangularW ave, the output is a:

Quantities and Units

Voltage, Current, and Resistance

Ohms Law, Energy, and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Rc Circuits

Inductors

Rl Circuits

Rlc Circuits and Resonance

Time Response of Reactive Circuits

Transformers

Understanding Transducers, Sensors, and Conversion in Industrial Processes

Filters

$\text { Figure } 17 < 2 -If I<sub>D</sub>=20 mA in Figure 17-2,V<sub>G</sub> equals_______$ $\text { Figure } 17 < 2$ -If I_D=20 mA in Figure 17-2,V_G equals_______

$\text { Figure } 17 < 4 -Which voltage would indicate that the amplifier in Figure 17-4 is operating in cutoff?$ $\text { Figure } 17 < 4$ -Which voltage would indicate that the amplifier in Figure 17-4 is operating in cutoff?

Figure $18 < 1$ -What trouble in the amplifier in Figure 18-1(b) could cause the voltage between the inverting and non-inverting inputs to nearly equal 0 V ?

A forward biased silicon diode is in series with a 12PPP resistor. The source voltage is 5 V . The voltage across the diode is_ and the voltage across the resistor is__

A typical op-amp has input impedance and output impedance.

$\text { Figure } 16<2 -Which block in Figure 16-2Will keep the output voltage nearly constant under varying load?$ $\text { Figure } 16<2$ -Which block in Figure 16-2Will keep the output voltage nearly constant under varying load?

$\text { Figure } 17 < 2 -Find V<sub>G</sub> in Figure 17-2 .$ $\text { Figure } 17 < 2$ -Find V_G in Figure 17-2 .

If $\mathrm { R } _ { \mathrm { i } } = 2.2 \mathrm { k } \Omega , \mathrm { R } _ { f } = 220 \mathrm { k } \Omega$ and A_OL=25,000 in an inverting op-amp, ACL equals_______