Capacitive reactance
Last Answer : Capacitive reactance formula
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Jun 11, 2019
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anonymous
Parallel Reactance and Resistance Example 1
Last Answer : Parallel Reactance and Resistance Example 1
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May 30, 2019
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anonymous
AC Circuits with Resistance but No Reactance
Last Answer : AC Circuits with Resistance but No Reactance AC Circuits with Resistance but No Reactance Series resistances let two resistances R 1 and R 2 are connected in series as shows in figure and there ... voltage. Voltage V A is common to both the branch hence voltage V A is common reference.
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May 26, 2019
by
anonymous
Capacitive reactance is more when?
Last Answer : Capacitive reactance is more when capacitance is less and frequency of supply is less.
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161 views
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Mar 24, 2018
by
anonymous
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What is the inverse of reactance?
Last Answer : Inverse of reactance is Susceptance .Unit of Susceptance is Siemens.
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Jan 7, 2018
by
anonymous
what is the reciprocal of reactance?
Last Answer : reciprocal of reactance is susceptance.
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459 views
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Sep 30, 2017
by
anonymous
Define impedance diagram and reactance diagram.
Last Answer : Impedance diagram: Impedance diagram is the simplified equivalent circuits of single line or one line diagrams of power system in which all components are represented by their equivalent circuit. ... machines are neglected and is used only for fault current calculation is called reactance diagram.
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242 views
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May 6, 2020
by
anonymous
What do you mean by exciting resistance and exciting reactance?
Last Answer : At no-load, a transformer behaves as a highly inductive load connected to the system which contains some resistance and inductance in parallel. The resistance is called exciting resistance R0 = V1/I w and reactance is called exciting reactance, X0 = V1/I mag
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2 answers
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Apr 28, 2020
by
anonymous
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If the % reactance upto the fault point is 20%, then the short circuit current will be
Last Answer : If the % reactance upto the fault point is 20%, then the short circuit current will be 5 times the full load current
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3.0k views
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May 8, 2018
by
anonymous
A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage regulation at 0.8 pf lagging would he
Last Answer : A single phase transformer has resistance and reactance of 0.2 pu and 0.6 pu respectively. Its pu voltage regulation at 0.8 pf lagging would he 0.52
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367 views
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May 3, 2018
by
anonymous
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Consider the following statements. Which of these statements are correct ? (1) Reactance relays are preferred for ground fault relaying (2) Impedance relays are most suitable for:protecting long transmission lines (3) Mho relays are best ... (1) and (3) (C) (2) and (4) (D) (1), (2) and (4)
Last Answer : Consider the following statements. Which of these statements are correct ? (1) Reactance relays are preferred for ground fault relaying (2) Impedance relays are most suitable for:protecting long transmission lines (3) Mho relays are ... (1) and (3) (C) (2) and (4) (D) (1), (2) and (4)
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Apr 29, 2018
by
anonymous
Reactance relay is normally preferred for protection against
Last Answer : Reactance relay is normally preferred for protection against earth faults
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Apr 29, 2018
by
anonymous
Ratio of the rotor reactance X to the rotor resistance R for a two-phase servo motor (A) is equal to that of a normal induction motor (B) is less than that of a normal induction motor (C) ... than that of a normal induction motor (D) may be less or greater than that of a normal induction motor
Last Answer : C
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582 views
2 answers
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Apr 28, 2018
by
anonymous
A 4000 kVA, 11 kV/132 kV delta-star connected 3-phase transformer has reactance, x1 = 0.12 p.u. The actual value of x1 referred to the low voltage side is (A) 0.85 Ω (B) 3.63 Ω (C) 36.3 Ω (D) 252 Ω
Last Answer : A 4000 kVA, 11 kV/132 kV delta-star connected 3-phase transformer has reactance, x1 = 0.12 p.u. The actual value of x1 referred to the low voltage side is 3.63 Ω
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Apr 28, 2018
by
anonymous
A reactance relay is (A) Voltage restrained directional relay (B) Directional restrained over-current relay (C) Voltage restrained over current relay (D) Directional restrained over voltage relay
Last Answer : A reactance relay is Directional restrained over-current relay
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Apr 28, 2018
by
anonymous
Circuits with XL Alone
Last Answer : Circuits with XL Alone X L values in series let two inductive reactances X L 1 and X L 2 are connected in series and has value 50 ohm and 50 ohm respectively. 100 volts A C ... phasor. And it is taken horizontal. Phase angle between inductive current and voltage is same 90 degree.
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May 26, 2019
by
anonymous
Define resistivity. State its unit.
Last Answer : Resistivity can be defined as the resistance of a conducting material per unit length with unit area of cross section. Its unit is ohm/meter
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Aug 4, 2019
by
anonymous
What is the smallest unit of a compound with the same chemical characteristics?
Last Answer : The molecule is the smallest unit of a compound with the same chemical characteristics.
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261 views
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Jun 29, 2019
by
anonymous
THE UNIT OF RELUCTANCE IS
Last Answer : The si unit of reluctance is Ampere-turn/weber
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1 answer
Write the purpose of coal and ash handling unit. Also write different activities that arc carried out in this unit.
Last Answer : Purpose of coal and ash handling unit :- To transport coal from coal storage to power plant. A large quantity of ash about 10 to 30 % produced in furnace, the removal of ash from boiler furnace ... disposed off. Various methods of disposal of ash: Mechanical system. Pneumatic system.
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1 answer
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Sep 8, 2018
by
anonymous
Define admittance and state its unit.
Last Answer : Admittance is defined as the ability of the circuit to carry (admit) alternating current through it. OR It is the reciprocal of impedance Z. i.e Admittance Y = 1/Z. Unit: Its unit is siemen (S) or mho (Ʊ).
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Sep 7, 2018
by
anonymous
What is the SI unit of conductivity ?
Last Answer : The SI unit of conductivity Siemens/m.
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Sep 2, 2018
by
anonymous
Which unit holds data permanently? (A) Input unit (B) Secondary storage unit (C) Output Unit (D) Primary Memory Unit
Last Answer : Which unit holds data permanently? (A) Input unit (B) Secondary storage unit (C) Output Unit (D) Primary Memory Unit
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May 8, 2018
by
anonymous
The unit heat rate characteristic of a thermal power unit shows : (A) Heat input per kWh of output versus the megawatt output of unit (B) Heat input per kW of output versus the megawatt output ... hour output of unit (D) Heat input per kW of output versus the megawatt hour output of unit
Last Answer : The unit heat rate characteristic of a thermal power unit shows : Heat input per kWh of output versus the megawatt output of unit
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Apr 30, 2018
by
anonymous
Which of the following is the SI unit for admittance? A) Ohm B) Henry C) Farad D) Siemens
Last Answer : Which of the following is the SI unit for admittance? A) Ohm B) Henry C) Farad D) Siemens
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Apr 29, 2018
by
anonymous
Which of the following is an example of SI derived unit? A) Capacitance (Farad) B) Time (second) C) Luminous intensity (Candela) D) All the above
Last Answer : Which of the following is an example of SI derived unit? A) Capacitance (Farad) B) Time (second) C) Luminous intensity (Candela) D) All the above
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Apr 29, 2018
by
anonymous
Which of the following is a unit of magnetic flux? A) Weber B) Maxwell C) Both A and B D) None of these
Last Answer : Which of the following is a unit of magnetic flux? A) Weber B) Maxwell C) Both A and B D) None of these
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Apr 29, 2018
by
anonymous
What is the SI unit for magnetic reluctance? A) Ampere B) Ampere-turns per weber C) Henry D) None of these
Last Answer : What is the SI unit for magnetic reluctance? A) Ampere B) Ampere-turns per weber C) Henry D) None of these
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Apr 29, 2018
by
anonymous
The unit of reluctance is?
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Mar 25, 2018
by
anonymous
The unit of retentivity is?
Last Answer : The unit of retentivity is weber/sq. m.
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Mar 25, 2018
by
anonymous
The unit of magnetic flux is?
Last Answer : The unit of magnetic flux is weber.
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Mar 25, 2018
by
anonymous
Last Answer : Flux density is denoted by B. And it is given as B = flux/ area Where, the unit of flux is Weber and unit of area is meter square. So the unit of flux density is weber per meter square which is also called as Tesla.
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Sep 30, 2017
by
anonymous
Joule X second is the unit of?
Last Answer : Joule X second is the unit of power .
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Sep 20, 2017
by
anonymous
Last Answer : Unit of power is Watt denoted by capital W .
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Sep 20, 2017
by
anonymous
Last Answer : Unit of voltage is volt denoted by capital V .
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Sep 20, 2017
by
anonymous
Last Answer : Unit of resistance is Ohm.
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Sep 20, 2017
by
anonymous
Last Answer : Unit of work is Joule denoted by capital J .
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1 answer
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Sep 20, 2017
by
anonymous
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Last Answer : Unit of frequency is herzt
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2 answers
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Sep 20, 2017
by
anonymous
Last Answer : Unit of inductance is Henry denoted by capital H .
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94 views
1 answer
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Sep 20, 2017
by
anonymous
A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will?
Last Answer : A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will not start at all.
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231 views
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Mar 20, 2018
by
anonymous
How to Install a Home HVAC Unit
Last Answer : How to Install a Home HVAC Unit Installing a two zone home heating, ventilating and air-conditioning (HVAC) system is not for a casual do-it-yourselfer but most aspects of the system past ... have oriented their wire coloring system. It should be done carefully to prevent any possibility of harm.
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May 14, 2021
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anonymous
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A) Watt B) Volts C) Farad D) Ampere
Last Answer : Correct answer: D) Ampere
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Jun 28, 2019
by
anonymous
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Options: A) WATT B) AMPERE C) VOLTS D) OHM
Last Answer : Correct Answer: A) WATT
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75 views
1 answer
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Jun 28, 2019
by
anonymous
Define the following terms related to tariff: (i) Connected load (ii) Unit consumed (iii) Fixed charges (iv) Electricity Tax
Last Answer : (i) Connected load It is the sum of the power ratings (Watts or kW or MW) of all devices and machines existing (installed) in the premises of consumer. It is used to decide the ... a percentage of the total electricity bill which includes all amounts that go to the electricity supply agency.
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Sep 22, 2018
by
anonymous
What does double integration of a unit step function lead to? A) A doublet B) A ramp C) An impulse D) A parabola
Last Answer : What does double integration of a unit step function lead to? A) A doublet B) A ramp C) An impulse D) A parabola
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Jun 18, 2018
by
anonymous
Which of the following are components of Central Processing Unit (CPU)? (A) Arithmetic logic unit, Mouse (B) Arithmetic logic unit, Control unit (C) Arithmetic logic unit, Integrated Circuits (D) Control Unit, Monitor
Last Answer : Which of the following are components of Central Processing Unit (CPU)? (A) Arithmetic logic unit, Mouse (B) Arithmetic logic unit, Control unit (C) Arithmetic logic unit, Integrated Circuits (D) Control Unit, Monitor
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May 8, 2018
by
anonymous
A control system having unit damping factor will give (1) Oscillatory response (2) Undamped response (3) Critically damped response (4) No response
Last Answer : 1
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2 answers
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May 1, 2018
by
anonymous
The unit of speed regulation of a governor is : (A) Hz (B) Hz/MW (C) Hz/MVA (D) rpm/MVAR
Last Answer : The unit of speed regulation of a governor is : Hz/MW
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1 answer
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Apr 29, 2018
by
anonymous
Unit commitment is a procedure in which : (A) Scheduling of total generation is done economically (B) Optimal combination of units in a system is chosen at any given time (C) ... are selected for financial economy (D) Most efficient machines are selected for minimum reactive power loss
Last Answer : Unit commitment is a procedure in which : Optimal combination of units in a system is chosen at any given time
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Apr 29, 2018
by
anonymous
A second order system shows 100% overshoot in its unit step response. It can be categorized as (A) underdamped system. (B) overdamped system. (C) Critically damped system. (D) undamped system.
Last Answer : A second order system shows 100% overshoot in its unit step response. It can be categorized as undamped system.
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1 answer
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Apr 28, 2018
by
anonymous
