Feel free I will provide you Transmission Corporation of Andhra Pradesh Limited (APTRANSCO), Assistant Engineer exam paper so that you can solve it easily.

Here is the exam paper

A digital-to-analog converter with a full-scale output voltage of 3.5 V has a resolution close to 14m V. Its bit size is
Options
A) 4 B) 8
C) 16 D) 32

A single-phase half-controlled rectifier is driving a separately excited dc motor. The dc motor has a back emf constant of 0.5 V/rpm. The armature current is 5 A without any ripple. The armature resistance is 2. The converter is working from a 280 V, single phase ac source with a firing angle of 80°.
Under this operating condition, the speed of the motor will be
Options
A) 339 rpm B) 359 rpm
C) 366 rpm D) 386 rpm

The insulation strength of an EHV transmission line is mainly governed by
Options
A) load power factor
B) switching over-voltages
C) harmonics
D) corona

High Voltage DC (HVDC) transmission is mainly used for
Options
A) bulk power transmission over very long distances
B) inter-connecting two systems with the same nominal frequency
C) eliminating reactive power requirement in the operation
D) minimizing harmonics at the converter stations

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Assistant Engineering exam paper

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