ITEM 9 a. What capacitance must be placed in series with an inductance of 0.05 H so that at 100 Hz, the impedance becomes equal to the ohmic resistance? • 87 HF • 70.7 HF • 35.5 µF • 50 μF b. One million cu meter of water is stored in a reservoir feeding water turbine. If the center of mass of the water is 40 m above the turbine and losses are negligible, how much energy (in MWh) will that volume of water produced? The density of water is 1000 kg/m^3. • 150 . 109 • 135 • 100 a. The load of the customer is more than the rating of the KWH meter so that a current transformer with ratio 400/5 is installed. The KWH meter gives a difference of 85 KWH. What shall be the actual consumption? • 8200 KWH 4300 KWH ● 6800 KWH 5600 KWH
ITEM 9 a. What capacitance must be placed in series with an inductance of 0.05 H so that at 100 Hz, the impedance becomes equal to the ohmic resistance? • 87 HF • 70.7 HF • 35.5 µF • 50 μF b. One million cu meter of water is stored in a reservoir feeding water turbine. If the center of mass of the water is 40 m above the turbine and losses are negligible, how much energy (in MWh) will that volume of water produced? The density of water is 1000 kg/m^3. • 150 . 109 • 135 • 100 a. The load of the customer is more than the rating of the KWH meter so that a current transformer with ratio 400/5 is installed. The KWH meter gives a difference of 85 KWH. What shall be the actual consumption? • 8200 KWH 4300 KWH ● 6800 KWH 5600 KWH
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Question
Solve ITEM 9 with complete GIVEN and STEP-BY-STEP SOLUTIONS.
![ITEM 8
a. At a certain location in an electric system, the available fault MVA is 300 MVA. A 15 MVA,
34.5 kV/6.24kV, 2.5% impedance, wye-wye grounded transformer is installed at that location.
Determine the short circuit MVA at the secondary.
195 MVA
300 MVA
200 MVA
● 240 MVA
b. An uncharged condenser in series with a 120-V voltmeter of 10,000 ohms resistance is
suddenly connected to a 100-V battery. One second later, the voltmeter reads 60 volts.
Determine the capacitance of the condenser.
195.76 µF
187.54 µF
●
●
● 190.62 μF
192.23 µF
c. Two resistors of resistance 3 and 6, are connected in parallel across a battery having a
voltage of 12 V. Determine the current flowing in the 30 resistor.
● 12 A
●
4 A
●
ITEM 9
a. What capacitance must be placed in series with an inductance of 0.05 H so that at 100 Hz, the
impedance becomes equal to the ohmic resistance?
87 HF
● 70.7 HF
●
b. One million cu meter of water is stored in a reservoir feeding water turbine. If the center of
mass of the water is 40 m above the turbine and losses are negligible, how much energy (in
MWh) will that volume of water produced? The density of water is 1000 kg/m^3.
150
109
● 135
• 100
●
a. The load of the customer is more than the rating of the KWH meter so that a current
transformer with ratio 400/5 is installed. The KWH meter gives a difference of 85 KWH. What
shall be the actual consumption?
● 8200 KWH
● 4300 KWH
●
2A
1A
14 yrs
13 yrs
ITEM 10
a. In a certain country the equivalent fuel reserve for power generation is 2 x10^6 MW-yrs. The
present peak power demand is 200 GW, and the expected power consumption growth rate is
2.1%. How long will the fuel reserve last?
● 2.77
● 2.06
35.5 μF
50 μF
●
●
6800 KWH
5600 KWH
b. The nameplate speed of a 60 Hz induction motor is 1164 rpm. If the speed at no load is 1188
rpm, what is the percent speed regulation?
12 yrs
● 11 yrs
4.24
2.86
c. Suppose that the consumption of energy in a certain country has a growth rate of 5% per
year. In how many years will the energy consumption will be tripled?
● 24.66 years
29.33 years
• 27.47 years
● 21.97 years](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffe32fea4-a950-4054-bf88-baa5485a56fe%2F8a522ea2-52f1-4bac-a2f5-ca8d71a5feb2%2F3fb25m_processed.jpeg&w=3840&q=75)
Transcribed Image Text:ITEM 8
a. At a certain location in an electric system, the available fault MVA is 300 MVA. A 15 MVA,
34.5 kV/6.24kV, 2.5% impedance, wye-wye grounded transformer is installed at that location.
Determine the short circuit MVA at the secondary.
195 MVA
300 MVA
200 MVA
● 240 MVA
b. An uncharged condenser in series with a 120-V voltmeter of 10,000 ohms resistance is
suddenly connected to a 100-V battery. One second later, the voltmeter reads 60 volts.
Determine the capacitance of the condenser.
195.76 µF
187.54 µF
●
●
● 190.62 μF
192.23 µF
c. Two resistors of resistance 3 and 6, are connected in parallel across a battery having a
voltage of 12 V. Determine the current flowing in the 30 resistor.
● 12 A
●
4 A
●
ITEM 9
a. What capacitance must be placed in series with an inductance of 0.05 H so that at 100 Hz, the
impedance becomes equal to the ohmic resistance?
87 HF
● 70.7 HF
●
b. One million cu meter of water is stored in a reservoir feeding water turbine. If the center of
mass of the water is 40 m above the turbine and losses are negligible, how much energy (in
MWh) will that volume of water produced? The density of water is 1000 kg/m^3.
150
109
● 135
• 100
●
a. The load of the customer is more than the rating of the KWH meter so that a current
transformer with ratio 400/5 is installed. The KWH meter gives a difference of 85 KWH. What
shall be the actual consumption?
● 8200 KWH
● 4300 KWH
●
2A
1A
14 yrs
13 yrs
ITEM 10
a. In a certain country the equivalent fuel reserve for power generation is 2 x10^6 MW-yrs. The
present peak power demand is 200 GW, and the expected power consumption growth rate is
2.1%. How long will the fuel reserve last?
● 2.77
● 2.06
35.5 μF
50 μF
●
●
6800 KWH
5600 KWH
b. The nameplate speed of a 60 Hz induction motor is 1164 rpm. If the speed at no load is 1188
rpm, what is the percent speed regulation?
12 yrs
● 11 yrs
4.24
2.86
c. Suppose that the consumption of energy in a certain country has a growth rate of 5% per
year. In how many years will the energy consumption will be tripled?
● 24.66 years
29.33 years
• 27.47 years
● 21.97 years
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