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In the ___________ type of chopper, two stage conversions takes place.
In the boost type of chopper, two stage conversions take place.
In the boost type of chopper, two stage conversions take place.
See lessIn case of three-phase dual converter, one of the converter circuits is fired at an angle of 60°. For both the converter circuits to have equal average output voltage, what is the value of the firing angle for the other converter circuit?
The firing angle for the other converter circuit in a three-phase dual converter, when one circuit is fired at an angle of 60°, in order for both circuits to have equal average output voltage, is 120°.
The firing angle for the other converter circuit in a three-phase dual converter, when one circuit is fired at an angle of 60°, in order for both circuits to have equal average output voltage, is 120°.
See lessFor a single-phase dual converter, with converters C1 and C2 connected in antiparallel, which relation among the following is true to keep the average voltages from C1 and C2 equal? C1 and C2 have firing angles α1 and α2 respectively.
The relation to keep the average voltages from converters C1 and C2 equal in a single-phase dual converter connected in antiparallel is given by:α1 + α2 = π (or 180 degrees)This means that if the firing angle of one converter increases, the firing angle of the other must decrease correspondingly toRead more
The relation to keep the average voltages from converters C1 and C2 equal in a single-phase dual converter connected in antiparallel is given by:
α1 + α2 = π (or 180 degrees)
This means that if the firing angle of one converter increases, the firing angle of the other must decrease correspondingly to maintain equal average output voltages.
See lessFor a SCR the maximum rms on-state current is 35 A. If the SCR is used in a resistive circuit for a rectangular wave with conduction angle of 90°. Calculate the average & rms currents respectively
To calculate the average and RMS currents for an SCR conducting in a resistive circuit with a rectangular wave and a conduction angle of 90°, we can use the following formulas. 1. Average Current (I_avg) for a rectangular waveform when the conduction angle is 90°:[I_{avg} = frac{I_{max}}{pi}]Where (Read more
To calculate the average and RMS currents for an SCR conducting in a resistive circuit with a rectangular wave and a conduction angle of 90°, we can use the following formulas.
1. Average Current (I_avg) for a rectangular waveform when the conduction angle is 90°:
[
I_{avg} = frac{I_{max}}{pi}
]
Where ( I_{max} ) is the maximum (RMS) on-state current, which is 35 A.
[
I_{avg} = frac{35}{pi} approx 11.14 , A
]
2. RMS Current (I_rms) for the same waveform:
[
I_{rms} = I_{max} times sqrt{frac{theta}{360}} = I_{max} times sqrt{frac{90}{360}} = I_{max} times sqrt{frac{1}{4}} = frac{I_{max}}{2}
]
So the RMS current would be:
[
I_{rms} = frac{35}{2} = 17.5 , A
]
Based on this, the average and RMS currents are approximately:
– Average Current (I_avg): 11.14 A
– RMS Current (I_rms): 17.
See lessWhich computer was considered the first electronic computer until 1973 when court invalidated the patent?
The computer considered the first electronic computer is the ENIAC (Electronic Numerical Integrator and Computer).
The computer considered the first electronic computer is the ENIAC (Electronic Numerical Integrator and Computer).
See lessFor an SCR the average & rms values of current are I/4 & I/2 respectively. Calculate the average on-state current rating (ITAV). Take maximum RMS on-state current = 35 A.
To calculate the average on-state current rating (ITAV) for an SCR, using the provided values:We have:- Average current (Iavg) = I/4- RMS current (Irms) = I/2- Maximum RMS on-state current (Irms_max) = 35 A 1. Since we have the IRMS expression:[I = 2 times Irms = 2 times (I/2) = I implies Irms = I/2Read more
To calculate the average on-state current rating (ITAV) for an SCR, using the provided values:
We have:
– Average current (Iavg) = I/4
– RMS current (Irms) = I/2
– Maximum RMS on-state current (Irms_max) = 35 A
1. Since we have the IRMS expression:
[
I = 2 times Irms = 2 times (I/2) = I implies Irms = I/2 quad text{(already given)}
]
2. Substitute the given ( Irms ):
[
I/2 = 35 A implies I = 70 A
]
3. Calculate the average current:
[
Iavg = I/4 = 70 A / 4 = 17.5 A
]
Thus, the average on-state current rating (ITAV) is 17.5 A.
Final answer:
ITAV = 17.5 A
See lessThe maximum rms current of an SCR is 50 A. For a 120° sine wave conduction the form factor (FF) = 1.878 Find the average on-state current rating (ITAV).
To find the average on-state current rating (ITAV) for an SCR conducting for a 120° sine wave, we can use the relationship between the RMS current (IRMS), the average current (ITAV), and the form factor (FF) of the wave. The form factor is defined as:[ text{FF} = frac{I_{RMS}}{I_{AVG}} ]Where:- ( I_Read more
To find the average on-state current rating (ITAV) for an SCR conducting for a 120° sine wave, we can use the relationship between the RMS current (IRMS), the average current (ITAV), and the form factor (FF) of the wave. The form factor is defined as:
[ text{FF} = frac{I_{RMS}}{I_{AVG}} ]
Where:
– ( I_{RMS} = 50 , A )
– ( text{FF} = 1.878 )
Rearranging the equation, we can find the average current:
[ I_{AVG} = frac{I_{RMS}}{text{FF}} ]
Substituting the values:
[ I_{AVG} = frac{50 , A}{1.878} ]
Calculating:
[ I_{AVG} approx 26.64 , A ]
Thus, the average on-state current rating ( I_{TAV} ) is approximately 26.64 A.
See lessWhat was the computer invented by Attanasoff and Clifford?
The computer invented by John Atanasoff and Clifford Berry is known as the Atanasoff-Berry Computer (ABC). It is considered one of the first electronic computers.
The computer invented by John Atanasoff and Clifford Berry is known as the Atanasoff-Berry Computer (ABC). It is considered one of the first electronic computers.
See lessThyristors are used in electronic crowbar protection circuits because it possesses
Thyristors are used in electronic crowbar protection circuits because they possess the ability to handle high voltage and current, have a fast switching capability, and can be triggered to turn on and off, allowing for rapid response to fault conditions. This makes them effective in protecting sensiRead more
Thyristors are used in electronic crowbar protection circuits because they possess the ability to handle high voltage and current, have a fast switching capability, and can be triggered to turn on and off, allowing for rapid response to fault conditions. This makes them effective in protecting sensitive electronics from overvoltage or overcurrent situations by effectively shorting the power supply to prevent damage.
See lessHeat dissipation from heat sink mainly takes place by
Heat dissipation from a heat sink mainly takes place by conduction, convection, and radiation. Conduction occurs as heat is transferred from the heat-generating component to the heat sink material. Convection occurs as heat is transferred from the surface of the heat sink to the surrounding air, oftRead more
Heat dissipation from a heat sink mainly takes place by conduction, convection, and radiation. Conduction occurs as heat is transferred from the heat-generating component to the heat sink material. Convection occurs as heat is transferred from the surface of the heat sink to the surrounding air, often enhanced by airflow (e.g., from a fan). Radiation is the emission of heat in the form of infrared radiation from the heat sink to the environment.
See less