Electro-Technical Officer Entrance Exam Syllabus

Questions and Answers

What is the principle of direct and alternating current?

Production of alternating current (correct)

Concept of resistance (correct)

Arrangement of cells

Concept of frequency and waveform (correct)

Electric circuits can be analyzed using KCL and KVL.

True

What are the components of a lead acid battery?

Cells, lead plates, electrolyte

The ______ is used for measuring electrical properties.

multimeter Signup and view all the answers

What is the effect of a capacitor in a rectifier circuit?

Voltage stabilization and ripple reduction Signup and view all the answers

Which of the following describes a three-phase induction motor?

Characteristics include starting and speed control Signup and view all the answers

Match the following concepts with their descriptions:

KCL = Current at a junction is conserved KVL = The total voltage around a closed loop is zero Phasors = Representation of AC quantities as vectors Zener diode = Voltage stabilization device Signup and view all the answers

What is the purpose of using filters in electronic circuits?

To smooth out voltage and reduce ripple Signup and view all the answers

Star and delta connections only apply to DC circuits.

False Signup and view all the answers

What is the function of an ammeter?

To measure current in a circuit Signup and view all the answers

The Fourier series representation is used for continuous periodic ______.

signals Signup and view all the answers

Study Notes

Electro-Technical Officer (ETO) Entrance Exam Overview

Total Marks: 100, Duration: 120 minutes, Type: On-line Objective, Level: Degree level (Electrical and Electronics).

General Concepts

Understanding electricity in terms of generation, transmission, distribution, and utilization.
Overview of electronics and communication fundamentals.

Direct and Alternating Current

Production principles of direct and alternating current; understanding frequency and waveform.
Key concepts: instantaneous maximum values, average values, form factor for sinusoidal waveform, phase, and phase difference.
Re-presentation of AC quantities via phasors; analysis of D.C. and A.C. circuits.
Core electrical concepts: resistance, inductance, capacitance, power, and power factor.
Practical A.C. circuit problems involving RLC series/parallel circuits; exploring the three-phase system and star-delta connections.

Electronics

Operational principles of electronic rectifiers: differences between half-wave and full-wave configurations.
Key relationships: D.C. output vs. A.C. input voltage, ripple effects, and voltage stabilization methods using Zener diodes.

Batteries

Structure and arrangement of cells in lead-acid and sealed maintenance-free (S.M.F.) batteries.
Understanding efficiency metrics: Ampere-hour and watt-hour efficiency; battery charging techniques and safety precautions.

Measuring Instruments

Overview of electrical properties and instructional measures for their quantification.
Construction and working principles of measuring devices: ammeters, voltmeters (moving coil and moving iron types), watt meters, energy meters.
Utilization of multi-meters, ohm meters, megger, and earth testers; discussion on errors and accuracy in measurements.

Air-conditioning

Principles governing air conditioning and refrigeration; understanding key refrigeration components and control mechanisms.

Electric Circuits and Fields

Network analysis techniques: KCL, KVL, node and mesh analysis.
Concepts in transient response and sinusoidal steady-state analysis including resonance.
Introduction to ideal current and voltage sources, Thevenin’s, Norton’s, Superposition, and Maximum Power Transfer theorems.
Understanding Gauss’s theorem, electric fields and potentials due to varying charge distributions, and principles of inductance and capacitance.

Signals and Systems

Representation techniques for continuous and discrete-time signals; operations such as shifting and scaling.
Insight into linear, time-invariant, and casual systems; Fourier series, sampling theorem, and transforms (Fourier, Laplace, Z).

Electrical Machines

Concepts related to single phase transformers: equivalent circuits, phasor diagrams, testing methods, regulation, and efficiency.
Thorough understanding of three-phase transformers, auto-transformers, and energy conversion principles.
Characteristics of D.C. machines including types, winding configurations, and generator characteristics.
Discussion on starting, speed control of motors, and performance characteristics for three-phase and single-phase induction motors.
Overview of synchronous machines, including operational characteristics, regulation, and applications for servo and stepper motors.

Power Systems

Basic concepts of power generation and performance modeling for transmission lines.
Key understanding of cable insulation performance, corona effects, and radio interference.
Analysis of distribution systems, use of per-unit quantities, and matrix methods including bus impedance and admittance.
Skills in load flow analysis and voltage control principles.

Description

Prepare for the Electro-Technical Officer (ETO) entrance exam with this comprehensive syllabus. It covers fundamental concepts of electricity, electronics, and communication essential for the exam. Ensure you understand the topics outlined to maximize your score.