Why are generators rated in kVA not in kW ?
Last Answer : Because It's rating of generator kva is apparent power. Kw is active power which we use. And one is kvar reactive power.
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116 views
3 answers
asked
Aug 19, 2019
by
anonymous
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What is the difference between linear and nonlinear electrical loads?
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1.1k views
0 answers
asked
Mar 10, 2018
by
anonymous
What is the difference between a blackout and brownout?
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67 views
0 answers
asked
Mar 10, 2018
by
anonymous
What is meant by KVA?
Last Answer : KVA - kilo volt ampere Used to specify the transformer details
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156 views
2 answers
asked
Mar 10, 2018
by
anonymous
The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is?
Last Answer : The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is 6 kVAR.
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731 views
1 answer
asked
Mar 25, 2018
by
anonymous
State the difference between energy conservation and energy audit.
Last Answer : energy conservation Energy audit It is reducing the growth of energy consumption by avoiding unnecessary usage of energy It is an inspection, survey & analysis of energy flows ... Various measuring instruments, with proper sensing elements are required for the energy audit.
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210 views
1 answer
asked
May 3, 2020
by
anonymous
What's the difference between electronic and electrical
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88 views
0 answers
asked
Jan 21, 2020
by
Sampson
What is the difference between a cable and a conductor?
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109 views
0 answers
asked
Aug 12, 2019
by
anonymous
Describe the difference between direct and alternating current.
Last Answer : Direct current is the flow of electricity or charge in one direction.. Alternative current is the flow of charge that doesn't flow in one direction.
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5.3k views
4 answers
asked
Jun 29, 2019
by
anonymous
Describe the difference between an open circuit and a short circuit.
Last Answer : Open circuit means the wire is cut meaning power will not flow and close circuit means wire is not cut and hence power will flow.Short circuit is the same as close circuit
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7.8k views
3 answers
asked
Jun 29, 2019
by
anonymous
Write difference between absolute & secondary instrument.
Last Answer : Absolute Instrument Secondary Instrument 1. These give magnitude of quantity in terms physical constants of instruments 1. These give reading directly of the quantity at the time of ... Raleigh current balance. 6. Examples - ammeter, voltmeter, amperehour meter, wattmeter etc.
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6.1k views
1 answer
asked
Sep 5, 2018
by
anonymous
What is the difference between relay and contactor?
Last Answer : Relay have smaller ratings. Contactor is a high rating relay.
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5.1k views
1 answer
asked
May 2, 2018
by
anonymous
Last Answer : In a single phase power factor meter the phase difference between the currents in the two pressure coils is exactly 90°.
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352 views
1 answer
asked
Mar 21, 2018
by
anonymous
Last Answer : A differential relay measures the vector difference between two or more similar electrical quantities.
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158 views
1 answer
asked
Mar 19, 2018
by
anonymous
What is the difference between BJT and FET?
Last Answer : BJT is a current opperated transistor while FET is a field opperated transistor.
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2.7k views
1 answer
asked
Mar 19, 2018
by
anonymous
What is the difference between a soft start and a VFD?
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76 views
0 answers
asked
Mar 15, 2018
by
anonymous
What is the difference between an AC and DC generator?
Last Answer : The generator which generates DC voltage is called DC generator and generator which generates AC voltage is called AC generator (or) Alternator. In DC generator armature is rotated and field winding ... generator. A DC generator can generate low voltages but an AC generator can generate upto 11kv.
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315 views
1 answer
asked
Mar 15, 2018
by
anonymous
What is the difference between synchronous and asynchronous generator?
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150 views
0 answers
asked
Mar 15, 2018
by
anonymous
What is the difference between synchronous and asynchronous motors?
Last Answer : The motor which rotates at constant speed is called synchronous motor. And that constant speed is called as synchronous speed. And the motor which does not rotates at constant speed are called asynchronous motor. Asynchronous motor is also called as Induction motor.
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143 views
1 answer
asked
Mar 15, 2018
by
anonymous
What is the difference between eddy current and hysteresis loss?
Last Answer : Loss occurred by magnetising and demagnetising process is called histerisis loss and the current flowed due to the magnetic field produced by the electric field applied is called eddy current losses
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3.0k views
1 answer
asked
Mar 15, 2018
by
anonymous
What is the difference between an anode and a cathode?
Last Answer : The anode is positively charged electrode and the cathode is negatively charged electrode.
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128 views
1 answer
asked
Mar 14, 2018
by
anonymous
What is the difference between an insulator and a dielectric?
Last Answer : Dielectric is the another name for insulator.
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113 views
1 answer
asked
Mar 11, 2018
by
anonymous
What is the difference between a sensor and a transducer?
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503 views
0 answers
asked
Mar 11, 2018
by
anonymous
What is the difference between microcontroller and ARM processor?
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139 views
0 answers
asked
Mar 11, 2018
by
anonymous
What is the difference between a microcontroller and a microprocessor?
Last Answer : Compare microprocessor and microcontroller Microprocessor Microcontroller 1)Inbuilt RAM and ROM 1)Do not have inbuilt RAM or ROM 2)Inbuilt timer 2)Doesn't have inbuilt timer ... same memory 6)Many Multifunction pins on the IC 6)less multifunction Pins on IC.
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226 views
1 answer
asked
Mar 11, 2018
by
anonymous
What is the difference between a mesh and a loop?
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365 views
0 answers
asked
Mar 10, 2018
by
anonymous
What is the difference between an ECU and an ECM?
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66 views
0 answers
asked
Mar 10, 2018
by
anonymous
What is the difference between DFT and FFT?
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71 views
0 answers
asked
Mar 10, 2018
by
anonymous
What is the difference between AC and DC drive?
Last Answer : AC means alternating current It's Frequency is 50hz Dc means direct current ItsI Frequency is 0Hz
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156 views
1 answer
asked
Mar 10, 2018
by
anonymous
What is difference between computer engineering and computer science?
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60 views
0 answers
asked
Mar 10, 2018
by
anonymous
What is the difference between analog and digital electronics?
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86 views
0 answers
asked
Mar 10, 2018
by
anonymous
What is the difference between line and phase current?
Last Answer : The currents flows through phase lines is called line voltage and currents flows from phase to neutral line is called phase current
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131 views
1 answer
asked
Mar 10, 2018
by
anonymous
What is the difference between line and phase voltage?
Last Answer : Line voltage is voltage between two phases R &Y (415 v) while phase voltage is the voltage between one phase and a neutral B & N (240 v).
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207 views
1 answer
asked
Mar 10, 2018
by
anonymous
What is the difference between a line voltage and low voltage control system?
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117 views
0 answers
asked
Mar 10, 2018
by
anonymous
What is the difference between beta and forced beta for BJT?
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554 views
0 answers
asked
Feb 20, 2018
by
anonymous
What is difference between Star and Delta Connection?
Last Answer : Star is 1. Open ckt 2. At center point present neutral Delta is 1. Closed ckt 2. Neutral not present in this case
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152 views
1 answer
asked
Dec 22, 2017
by
anonymous
What is the difference between a counter and a timer?
Last Answer : Counter counts only when the trigger is applied and timer counts continuously with some equal delay.
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358 views
1 answer
asked
Dec 19, 2017
by
anonymous
What is the difference between renewable and nonrenewable energy sources?
Last Answer : Renewable energy sources are non-perishable, and Non-renewable energy sources are perishable sources. Non-Renewable energy sources are like coal, oil,nuclear fuel etc. Renewable energy sources are :- wind, solar, tidal, Geo thermal etc.
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323 views
2 answers
asked
Dec 18, 2017
by
anonymous
What is the difference between a switch and a relay?
Last Answer : Switch is simply a mechanical contact mechanism and relay is a electromagnetic switch . Switch can be direct mechanically turn on and off but relay can be operated by energising coil .
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110 views
1 answer
asked
Dec 17, 2017
by
anonymous
What is the difference between a coil and an inductor?
Last Answer : Inductor is covering with insulating material is called coil.so they differentiate between coil and inductor.
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110 views
1 answer
asked
Dec 16, 2017
by
anonymous
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What is the difference between forward and reverse bias?
Last Answer : Forward bias is a PN junction bias which allows current to flow through the junction. Forward bias decreases the resistance of the depletion layer. Reverse bias is a PN junction bias that allows only ... Positive polarity on the n-type material and negative polarity to the p-type material.
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277 views
3 answers
asked
Dec 9, 2017
by
anonymous
Distinguish between AC and DC.
Last Answer : Particulars Direct Current Alternating Current Definition It is the current whose magnitude and direction do not change with respect to time. It is the current whose ... system, electroplating, Battery charging, Traction. AC machines, Domestic and industrial supply.
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462 views
2 answers
asked
Aug 8, 2018
by
anonymous
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Give the circuit analysis of current source inverter with resistive load. What are the main difference between voltage source inverter and current source inverter?
Last Answer : Current source inverter (CSI): In current source inverter, the output current is independent of load. The input current of current source inverter is constant. Current source converter converts DC input current to ... are connected in parallel. In CSI diodes are connected in series.
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394 views
1 answer
asked
Feb 18, 2018
by
anonymous
what is the difference between AC and DC current ?
Last Answer : AC is generated using Alternator. DC is generated using DC generator. AC changes its direction periodically. DC do not change its direction periodically. AC have non zero frequency. DC have zero ... Power factor of AC is between 0 and 1. But power factor of DC is always 1.
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153 views
1 answer
In an AC. circuit, a low value of kVAR compared with kW indicates?
Last Answer : In an AC. circuit, a low value of kVAR compared with kW indicates high power factor.
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712 views
1 answer
asked
Mar 25, 2018
by
anonymous
Why Transformer rating is given in kVA?
Last Answer : Because of core losses and iron losses as core losses are measured in amps and cu losses in voltage ....this is definatly reason for the rating Or kVA is the unit for apparent power. Apparent ... shift between voltage and current). So a transformer has to be rated (and selected) by apparent power.
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2.8k views
6 answers
asked
Aug 12, 2018
by
anonymous
Define kVA rating of transformer.
Last Answer : kVA rating of transformer is defined as the product of voltage (V) and current (I) on primary side of transformer or secondary side of transformer divided by 1000. On both side the VA rating remains ... Mathematically kVA rating is given by, kVA rating of transformer = V1I1/1000 =V2I2/1000
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158 views
1 answer
asked
Aug 12, 2018
by
anonymous
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A 40 kVA transformer has a core loss of 400 W and a full load copper loss of 800 W. The proportion of full load at maximum efficiency is
Last Answer : A 40 kVA transformer has a core loss of 400 W and a full load copper loss of 800 W. The proportion of full load at maximum efficiency is 0.707
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774 views
1 answer
asked
May 8, 2018
by
anonymous
The kVA rating of Three-phase transformer with Voltage = 200V and Current = 100A will be : (A) 34.64 kVA (B) 75 kVA (C) 20 kVA (D) None of the above
Last Answer : The kVA rating of Three-phase transformer with Voltage = 200V and Current = 100A will be : 34.64 kVA
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199 views
1 answer
asked
May 8, 2018
by
anonymous
