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Electrical Engineering
Classify the following signal as energy signal or power signal. Find the
normalized energy or normalized power.
(i) sin 2t + 3 cos 4t
Electrical Engineering
Question 4
4.1 An interconnected 50 Hz power system consisting of one area has two
turbine-generator units, rated 600 and 800 MVA, with regulation constants
of 0.04 and 0.06 per unit, respectively, based on their respective ratings.
When each unit carries a 350 MVA steady-state load, let the area load
suddenly increase by 250 MVA. Determine:
4.1.1 The area frequency response characteristic on a 1000 MVA base. (5)
4.1.2 ∆
4.1 An interconnected 50 Hz power system consisting of one area has two
turbine-generator units, rated 600 and 800 MVA, with regulation constants
of 0.04 and 0.06 per unit, respectively, based on their respective ratings.
When each unit carries a 350 MVA steady-state load, let the area load
suddenly increase by 250 MVA. Determine:
4.1.1 The area frequency response characteristic on a 1000 MVA base. (5)
4.1.2 ∆
Electrical Engineering
Question 4
4.1 An interconnected 50 Hz power system consisting of one area has two
turbine-generator units, rated 600 and 800 MVA, with regulation constants
of 0.04 and 0.06 per unit, respectively, based on their respective ratings.
When each unit carries a 350 MVA steady-state load, let the area load
suddenly increase by 250 MVA. Determine:
4.1.1 The area frequency response characteristic on a 1000 MVA base. (5)
4.1.2 ∆
4.1 An interconnected 50 Hz power system consisting of one area has two
turbine-generator units, rated 600 and 800 MVA, with regulation constants
of 0.04 and 0.06 per unit, respectively, based on their respective ratings.
When each unit carries a 350 MVA steady-state load, let the area load
suddenly increase by 250 MVA. Determine:
4.1.1 The area frequency response characteristic on a 1000 MVA base. (5)
4.1.2 ∆
Electrical Engineering
Question 6
6. A three-phase, 50 Hz, 667 MVA, 22 kV, 4-pole steam driven turbine
generator has an
6. A three-phase, 50 Hz, 667 MVA, 22 kV, 4-pole steam driven turbine
generator has an
Electrical Engineering
Question 4
4.1 An interconnected 50 Hz power system consisting of one area has two
turbine-generator units, rated 600 and 800 MVA, with regulation constants
of 0.04 and 0.06 per unit, respectively, based on their respective ratings.
When each unit carries a 350 MVA steady-state load, let the area load
suddenly increase by 250 MVA. Determine:
4.1.1 The area frequency response characteristic on a 1000 MVA base. (5)
4.1.2 ∆
4.1 An interconnected 50 Hz power system consisting of one area has two
turbine-generator units, rated 600 and 800 MVA, with regulation constants
of 0.04 and 0.06 per unit, respectively, based on their respective ratings.
When each unit carries a 350 MVA steady-state load, let the area load
suddenly increase by 250 MVA. Determine:
4.1.1 The area frequency response characteristic on a 1000 MVA base. (5)
4.1.2 ∆
Electrical Engineering
Question 4
4.1 A 600 MVA, 50 Hz turbine-generator has a regulation constant R=0.06 per
unit based on its own rating. If the generator frequency increases by 0.02 Hz
in steady-state, what is the decrease in mechanical power output. Assume
a fixed reference power setting. (5)
4.2 A three-phase, 50 Hz, 100 MVA, 4-pole synchronous generator has an
inertia constant H of 3.5 s and is supplying 0.16 pu real power on a system
base of 500 MVA. The input to the generator is increased to 0.18 pu. Determine:
4.2.1 The kinetic energy stored in the moving parts of the generator
4.2.2 The acceleration of the generator
4.1 A 600 MVA, 50 Hz turbine-generator has a regulation constant R=0.06 per
unit based on its own rating. If the generator frequency increases by 0.02 Hz
in steady-state, what is the decrease in mechanical power output. Assume
a fixed reference power setting. (5)
4.2 A three-phase, 50 Hz, 100 MVA, 4-pole synchronous generator has an
inertia constant H of 3.5 s and is supplying 0.16 pu real power on a system
base of 500 MVA. The input to the generator is increased to 0.18 pu. Determine:
4.2.1 The kinetic energy stored in the moving parts of the generator
4.2.2 The acceleration of the generator
Electrical Engineering
Question 4
4.1 A 600 MVA, 50 Hz turbine-generator has a regulation constant R=0.06 per
unit based on its own rating. If the generator frequency increases by 0.02 Hz
in steady-state, what is the decrease in mechanical power output. Assume
a fixed reference power setting. (5)
4.2 A three-phase, 50 Hz, 100 MVA, 4-pole synchronous generator has an
inertia constant H of 3.5 s and is supplying 0.16 pu real power on a system
base of 500 MVA. The input to the generator is increased to 0.18 pu. Determine:
4.2.1 The kinetic energy stored in the moving parts of the generator (2)
4.2.2 The acceleration of the generator
4.1 A 600 MVA, 50 Hz turbine-generator has a regulation constant R=0.06 per
unit based on its own rating. If the generator frequency increases by 0.02 Hz
in steady-state, what is the decrease in mechanical power output. Assume
a fixed reference power setting. (5)
4.2 A three-phase, 50 Hz, 100 MVA, 4-pole synchronous generator has an
inertia constant H of 3.5 s and is supplying 0.16 pu real power on a system
base of 500 MVA. The input to the generator is increased to 0.18 pu. Determine:
4.2.1 The kinetic energy stored in the moving parts of the generator (2)
4.2.2 The acceleration of the generator
Electrical Engineering
Multiple Choose questions
Question 10
Th goal of the equal area criteria in transient stability is to determine whether a system
is stable or not without having to completely integrate the system response. The
system will be stable after the fault if:
(1) The acceleration area is greater than 1.0 per unit.
(2) The acceleration area is greater than the deceleration area.
(3) The deceleration area is smaller than the acceleration area.
(4) The deceleration area is greater than the acceleration area.
Question 1
Which of the following is an advantage of using bundled conductors in transmission
lines?
(1) They reduce radio interference and corona at the cost of increasing line series
reactance.
(2) They reduce line series reactance, radio interference and corona.
(3) They increase line charging reactance and series reactance.
(4) They have high tensile strength and increase the skin effect.
Question 10
Th goal of the equal area criteria in transient stability is to determine whether a system
is stable or not without having to completely integrate the system response. The
system will be stable after the fault if:
(1) The acceleration area is greater than 1.0 per unit.
(2) The acceleration area is greater than the deceleration area.
(3) The deceleration area is smaller than the acceleration area.
(4) The deceleration area is greater than the acceleration area.
Question 1
Which of the following is an advantage of using bundled conductors in transmission
lines?
(1) They reduce radio interference and corona at the cost of increasing line series
reactance.
(2) They reduce line series reactance, radio interference and corona.
(3) They increase line charging reactance and series reactance.
(4) They have high tensile strength and increase the skin effect.
Electrical Engineering
Multiple Choice questions
Question 2
When line losses are neglected, simpler expressions for line parameters are
obtained. How are the expressions of the exact
Question 2
When line losses are neglected, simpler expressions for line parameters are
obtained. How are the expressions of the exact
Electrical Engineering
Multiple Choose question
Question 1
Which of the following is an advantage of using bundled conductors in transmission
lines?
(1) They reduce radio interference and corona at the cost of increasing line series
reactance.
(2) They reduce line series reactance, radio interference and corona.
(3) They increase line charging reactance and series reactance.
(4) They have high tensile strength and increase the skin effect.
Question 1
Which of the following is an advantage of using bundled conductors in transmission
lines?
(1) They reduce radio interference and corona at the cost of increasing line series
reactance.
(2) They reduce line series reactance, radio interference and corona.
(3) They increase line charging reactance and series reactance.
(4) They have high tensile strength and increase the skin effect.
