A three-phase line has its conductors at the corners of an equilateral triangle of side 1 m. The radius of each conductor is (1/0.7788) cm. The inductance per phase per km is given by:

Specify the LM-series linear regulator required to regulate a fixed voltage of -7 V. Please write the numbers only in the answer field: i.e. for LM1234, you would write 1234 in the answer field.

Q5/B: A three units string insulator is fitted with guard ring around the button insulator. The capacitances of the link pins capacitance. Find the voltage distribution across each unit of string and string efficiency.

Give a description of capacitive reactance and back up your description with examples/evidence.

Assuming that a nonzero ac voltage source is applied, state whether the power and reactive power are positive, negative, or zero for a. a resistance in series with an inductance; b. a resistance in series with a capacitance. (Assume that the resistances, inductance, and capacitance are nonzero and finite in value.)

2

I. SOLVE THE FOLLONING PROBLENS : A COPPER WIRE OF 0,3 Mm RAAUS HAS A LEN ETH OF 1. JOM- IF THE RESISTIVITY of cOpPER IS 1-7 x0 WHAT WOULD BE THE RESISTANOE OF THE WIRE? OF A 100m WIRE IS 1035 mm AND 3.7 OHMS. WHAT 2. THE DIAMETER THE REISTANCE IS IS THE CONDUCTIVITY 3. WHAT WILL BE THE VALUE OF A CAPACITOR WHEN IT HAS A CAPACITIVE REACTANCE OF 300R ANP to A 6o HZ. SUPPLY? IN FARADS IS CONNECTED 4. WHAT Is THE VALUE OF THE RESISTOR WITH THE FOLLOWING COLORS ? A. BROWN, BLACK, GOLD, REP B. BLUE YELON BROWN, SILVER PED, SILVER, BROWN, VIOET C. 5. AND t WHEN V 220V AND R= 50n WHEN I = 45 A WHEN V = 120V FIND V ANO R 80n AND AND E= 11A-

Compare alternative and direct currents by comparing their physical properties. (Explain alternans, cycles, periods, frequency terms during this comparison. Also in this comparison, explain the electron flow directions separately in alternating and direct current)

Another name for the RMS value of current or voltage is ... O the effective value O the exact value O the true value O the reactance value

A sinusoidal voltage has a value of 100 volts at 2.5 milliseconds and takes 20 milliseconds to complete one cycle. Then find the maximum cost and the time to reach it for the first time.