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A single phase full bridge inverter feds power at 50Hz to RLC load with r=5 ohms , l=0.3H and C=50μF. The dc input voltage is 220volts. (a) Find an expression for load current up to fifth harmo
A single phase cyclo converter with mid point configuration is used for obtaining an output frequency of 1/3 times the input frequeny.Turns ratio from primary to upper seconday is 1/1 and to lower s
Consider a balanced three-phase system where the sources areconnected in a wye formation and the load is connected in a wyeformation with impedance ZPY for each phase. The"a" phase source voltage i
Discuss how delay is generated (1) using only one register, and (2) using a pair of registers . explain the method to calculate the delay time. Describe the interface connections of a 7 -segment di
Discuss the properties and practical applications of the following electrical engineering materials : (a)Carbon and graphite (b) copper
Draw the circuit and discuss the operation of SA type ADC. Determine the conversion time of an SA-ADC for 12-bit resolution,at 2.5 MHz.
a Three phase to single phase converter employs a 6 pulse bridge circuit. This device is fed from 400V,50 Hz supply through adelta/stare transformer whose per phase turns ratio 3:1. For an output fr
A temperature transmitter has an input range of 0 to 100 degrees celsius, an output range of 4 to 20 mA, and anaccuracy of ± 0.5%. The ideal transmitter has a linear output from 4 mA at 0 deg
Draw the gate-level logic circuit for a one-bit selectable adder subtractor circuit using only two-input XOR, two-input NAND,and NOT gates. (Hint: The XOR gate may be used as a programmable inverter
The load reactance is 4 Ω. Thecommutation overlape and thyrister turn - off time limitthe firing angle in the inverter mode to 1650. Compute(a) peak value of r.m.s. output voltage (b) r.m.s.ou
A single phase cyclo - converter with mid point configuration is use for obtaining an output frequency of one third times the inputfrequency. Turn ratio from primary to upper secondary is 1/1 and to
The local building regulations prohibits construction of buildings higher than 25 m. Determine if it is possible to mount the antennas right at the roof top or if antenna masts to raise the height a
A chopper working from a220 V.d.c. source is operating at frequency of 50 Hz. and is connected to an R L load of R = 5 Ω and L = 40 mH. Determine the value of duty cycle at which the minimum l
If the collector of a transistor is connected to the base terminal, the transistor continues to operate in the forward-active mode, since the B-C junction is not reverse biased biased. Determine the
he armature at the other end of thecommutator is tapped and connected to balanced 3-Phase voltages, sothat a rotating field is produced, The speed of this rotating fieldis 3000 r.p.m. (1) clockwise
design a sequence detector to detect the sequences 010 and 1001 with repetition permitted in each case.
A 4-pole, 50 Hz scharg motor, running at no-load, gives minimum and maximum speeds of 500 and 2500 r.p.m. respectively, for brush separation of 180 electrical degree (i.e. one pole pitch).
Design a sequential circuit that cycles through the BCD powers of two (1,2,4,8) in increasing order Of the BCD numbers not used,send the even numbers to 1 and the odd numbers to 8.
find the new speed and power factor,when connected to 22oV,25 hz. supply,the motor current remaining the same .The motor has total resistance of 1ohm.and total inductance of 0.1 H.
Discuss differential protection, modified differential protection and percentage differential protection of alternators. Draw the suitable connection diagrams for clear understanding.
Determine the time of operation of 5A , 3 Seconds over current relay having a current setting of 150% and a time setting multiplier of 0.8 connected to supply circuit through a 500/5 current transf
An LTI system's impulse response is described by the differential equation, dh(t)/dt + 3h(t) = impulse function. Find the characteristic roots for the system, the initial condition, and the h(t) for
a) Draw the circuit diagram of a bridge rectifier made from pn junction diodes that will function as a negative ectifier. Show the path of current flow for both positive and negative Vin. b) Plot th
A 35 kHz sinusoidal voltage has zero phase angle and amaximum amplitude of 10 mV. When this voltage is applied across theterminals of a capacitor, the resulting steady-state current has amaximum amp
It is commonly found that if a capacitor is changed to some dcvoltage and then removed from the circuit and is totally dischargedwith a "short" placed across it when the short is removed thecapacito