List of top Electrical Engineering Questions on Current Distribution

If the supply frequency increases, the Skin Effect in a conductor:

Find the current through 3 ohm resistor using superposition theorem

 

An ammeter has a current range of 0–5 A, and its internal resistance is 0.2 Ω. In order to change the range to 0–25 A, we need to add a resistance of ________.
A transformer has a core loss of 64 W and copper loss of 144 W. When it is carrying 20% over load current, the load at which this transformer will operate at the maximum efficiency is _______.
A slide potentiometer has 5 wires 2m each. With the help of a standard voltage source of 1.234 V, it is standardized by keeping the jockey at 123.4 cm. If resistance of potentiometer wire is 10000$\Omega$, then the value of working current will be _______.
Bundled conductors are mainly used in high voltage overhead transmission lines to _______.
In controlled rectifiers, the nature of load current, i.e. whether load current is continuous or discontinuous:
Calculate the conversion time of a 12-bit counter type ADC with 1 MHz clock frequency to convert a full scale input?
A 50 Hz alternator is rated 500 MVA, 20 kV with \( X_d = 1.0 \) per unit and \( X''_d = 0.2 \) per unit. It supplies a purely resistive load of 400 MW at 20 kV. The load is connected directly across the generator terminals when a symmetrical fault occurs at the load terminals. The initial rms current in the generator is per unit is _______.
The rated voltage of a three-phase power system is given as _______.
The DC and RMS components of currents in a half-wave rectifier are given by the relations?
A transistor has \( I_E = 10\, \text{mA} \) and \( h_{FE} = 0.98 \). The base and collector currents respectively are _______.
A single-phase full bridge inverter is connected to a load of 24 \( \Omega \). The DC input voltage is 48 V. What is the rms output voltage at fundamental frequency?
The maximum reverse bias voltage that can be applied to a reverse biased PN junction diode without damaging the junction is called _______.
In a three-phase full wave AC to DC converter, the ratio of output ripple frequency to the supply voltage frequency is _______.
A transformer has no-load voltage of 220 V and full-load voltage of 210 V. Find voltage regulation.
When the firing angle \( \alpha \) of a single phase, fully controlled rectifier feeding a constant DC current into a load is \( 30^\circ \), the displacement power factor of the rectifier is _______.
A DC chopper operates on 230 V DC and frequency of 400 Hz, feeds an R-L load. If the output voltage of chopper is 150 V, the ON time of the chopper is _______.
If the fault current is 2000 A, the relay setting is 50% and the CT ratio is 400/5, then the plug setting multiplier will be ________.
Ohm’s law relates the current density \( J \) with field intensity \( E \) as _______.
Suspension type insulators are used for voltages beyond _______.
Dummy coils may be needed in a DC wave winding _______.
An induction motor will develop maximum torque when the phase difference between the stator flux and the rotor current is_______.
Two transformers of identical voltages but of different capacities are operating in parallel. For satisfactory load sharing _______.
The only disadvantage of field control method for controlling the speed of a DC shunt motor is that it _______.