Zarqa University
Dr. Said Mohammad
Electronics Chapter 2
1- Determine ID.
A.
0 mA
B.
1.893 mA
C.
2.036 mA
D.
2.143 mA
Answer: Option B
2- What best describes the circuit?
A.
Full-wave rectifier
B.
Half-wave rectifier
C.
Clipper
D.
Clamper
Answer: Option B
3. A diode is in the "________" state if the current established by the applied sources is
such that its direction matches that of the arrow in the diode symbol, and V D ≥ 0.7 V for
Si and VD ≥ 0.3 V for Ge.
A.
off
B.
on
C.
neutral
D.
quiescent
Answer: Option B
4. The output frequency of a half-wave rectifier is ________ the input frequency.
A.
one-half
B.
twice
C.
equal to
D.
none of the above
Answer: Option C
5. Determine Vo if E1 = E2 = 10 V.
A.
9.3 V
B.
10 V
C.
–10 V
D.
0V
Answer: Option B
1
Dr. S. Azar
Zarqa University
Dr. Said Mohammad
6. In the operation of a half-wave rectifier with a capacitor-input filter, the ripple factor
can be lowered by ________ the value of the filter capacitor or ________ the load
resistors.
A.
decreasing, decreasing
B.
decreasing, increasing
C.
increasing, decreasing
D.
increasing, increasing
Answer: Option D
7. What best describes the circuit?
A.
Full-wave rectifier
B.
Half-wave rectifier
C.
Clipper
D.
Clamper
Answer: Option C
8. Determine the value of the load resistor.
A.
RL = 5 k
B.
RL = 5.5 k
C.
RL = 6 k
D.
None of the above
Answer: Option B
9. If the ac supply is 60 Hz, what will be the ripple frequency out of the half-wave
rectifier?
A.
B.
C.
D.
30 Hz
50 Hz
60 Hz
120 Hz
Answer: Option C
2
Dr. S. Azar
Zarqa University
Dr. Said Mohammad
10. A silicon diode in a half-wave rectifier has a barrier potential of 0.7 V. This has the
effect of
A.
B.
C.
D.
reducing the peak output voltage by 0.7 V.
increasing the peak output voltage by 0.7 V.
reducing the peak input voltage by 0.7 V.
no effect.
Answer: Option A
11. Determine the current level if E = 15 V and R = 3 k.
A.
B.
C.
D.
0A
4.76 mA
5 mA
5A
Answer: Option B
12. Determine ID2.
A.
B.
C.
D.
29.40 mA
30.30 mA
14.70 mA
None of the above
Answer: Option C
13. Determine V2.
A.
B.
C.
D.
3.201 V
0V
4.3 V
1.371 V
Answer: Option D
3
Dr. S. Azar
Zarqa University
Dr. Said Mohammad
14. What is the PIV for each diode in a full-wave center-tapped rectifier? Note: Vp(out) =
peak output voltage.
A.
B.
C.
D.
Vp(out) – 0.7 V
Vp(out) + 0.7 V
2Vp(out) – 0.7 V
2Vp(out) + 0.7 V
Answer: Option D
15. Determine ID2.
A.
6.061 mA
B.
0.7 mA
C.
3.393 mA
D.
3.571 mA
Answer: Option C
4
Dr. S. Azar