Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Textbook Question
Chapter 12, Problem 3PA
An office building uses a bank of 63 lead-acid cells connected in series with a capacity of 80 amp-hours each to provide battery backup for their computers. The lead-acid cells are to be replaced with nickel-metal hydride cells with a capacity of 40 amp-hours each. How many nickel-metal hydride cells will be required to replace the lead-acid cells and how should they be connected?
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Question 5
Assume the zener diodes are all ideal in the circuit below and let V1=3.7 V, R1=935
2, R2=1,04702, and R3=855. Determine the output voltage Vo. Express your
answer in Volts and round to the 1st digit to the right of the decimal.
R1
V1
D1
5V
R2
D2
3V
{R3
D3
2V
Vo
Procedure
1. Use multisim simulation package to simulate the circuit shown in the
figure 5. Consider the following. Transistor type 2N2222A (NPN)
and 2N3702 (PNP), Diode type (1N4007G).
+20 V
R
470
D
Vut
D2
RL
16 N
V,
R2
470 2
-20 V
Figure 5.Class AB simulation circuit diagram.
3. Discuss the efficiency compared to class A power amplifier.
i. he avan i
When resistors with higher wattage ratings are required,
resistors are generally used to dissipate the excessive heat.
a) Variable
b) Fixed
c) Wirewound
d) Preset
The diode is considered shorted when both anode and cathode has
a) Low resistance
b) High resistance
c) Different resistance
d) None of the above
When two resistors are connected in parallel then their overall power rating
is
a) Increased
b) Decreased
c) Doubled
d) Reduced
Chapter 12 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 12 - 1. What is a voltaic cell?
Ch. 12 - What factors determine the amount of voltage...Ch. 12 - What determines the amount of current a cell can...Ch. 12 - 4. What is a battery?
Ch. 12 - 5. What is a primary cell?
Ch. 12 - What is a secondary cell?Ch. 12 - 7. What material is used as the positive electrode...Ch. 12 - What is another name for the Leclanch cell?Ch. 12 - 9. What is used as the electrolyte in a...Ch. 12 - What is the advantage of the alkaline cell as...
Ch. 12 - What material is used as the positive electrode in...Ch. 12 - 12. How is the A-hr capacity of a lead-acid...Ch. 12 - What device is used to test the specific gravity...Ch. 12 - 14. A 6-V lead-acid battery has an A-hr rating of...Ch. 12 - Three 12-V, 100-A-hr batteries are connected in...Ch. 12 - What is the voltage produced by a silicon solar...Ch. 12 - What determines the current capacity of a solar...Ch. 12 - A solar cell can produce a voltage of 0.5 V and...Ch. 12 - Prob. 19RQCh. 12 - Prob. 20RQCh. 12 - Prob. 21RQCh. 12 - Prob. 22RQCh. 12 - Your job is to order and connect lead-acid cells...Ch. 12 - A bank of nickel-cadmium cells is used as the...Ch. 12 - An office building uses a bank of 63 lead-acid...
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