Which of the following are the advantages of Aerial Bunched Cables (ABC)?

A fully controlled natural commutated 3-phase bridge rectifier is operating with a firing angle α = 30°, The peak to peak voltage ripple expressed as a ratio of the peak output dc voltage at the output of the converter bridge is

Where,
φ is firing angle

Voltage ripple for 3-phase bridge rectifier = cos(φ) = Cos(30)
= 1/2

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The frequency of the emf in the stator of a 4-pole induction motor is 50 Hz, and that in the rotor is 2 Hz. What is the slip and at what speed is the motor running?

Rotor frequency, f_r = s*f_s
s = 2/50
s = 0.04

Ns = 120f/P
Ns = 1500 rpm
s = (Ns - Nr)/Ns
Nr = Ns(1 - s)
Nr = 1500*(1 - 0.04)
Nr = 1440 rpm

A ___ is a device that forwards packets between networks by processing the routing information included in the packet.

At what range of wind speed is the electricity from the wind turbine is generated?

For small turbine starts generating power 12.6 kph (3.5 m/s) is the typical cut-in speed.
At 36–54 kph (10–15 m/s) produces maximum generation power.
At 90 kph (25 m/s) maximum, the turbine is stopped or braked.