Question 2312 - GATE Electrical Engineering

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Q#1 DC Machines GATE EE 2017 NAT +2 marks -0 marks

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A 220 V DC series motor runs drawing a current of 30 A from the supply. Armature and field circuit resistances are and , respectively. The load torque varies as the square of the speed. The flux in the motor may be taken as being proportional to armature current. To reduce the speed of the motor by 50%, the resistance in ohms that should be added in series with the armature is _________. (Give the answer up to one decimal place).

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Network Analysis

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Network Basics

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Network Theorems - DC Circuits

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Two Port Network

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Signals

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LTI Systems

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Laplace Transform

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Sampling

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Control Systems

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Transfer Function

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Time Response Analysis

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Analog Electronics

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BJT

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JFET

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Amplifiers

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Microprocessor

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Computer Organisation

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Electrical Machines

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Transformers

109

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Induced EMF - Transformer	0	Browse
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Auto Transformer	0	Browse
Parallel Operation - Transformer	0	Browse
Harmonics in Transformer	0	Browse
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Cascading of Machines	0	Browse
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Induction Machines

111

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Singe Phase Induction Motor	0	Browse
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Special Machines

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237

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Chopper

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139

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EMFT EE

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Measurement of R,L and C

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Matrices and Determinants	0	Browse
Solution of Linear Equations	0	Browse
Eigen Values and Eigen Vectors	1	Browse
Topic-wide	69	Browse

Calculus

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Differential Calculus	0	Browse
Integral Calculus	0	Browse
Vector Calculus	0	Browse
Topic-wide	62	Browse

Differential Equations

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First Order Differential Equations	0	Browse
Higher Order Differential Equations	0	Browse
Topic-wide	18	Browse

Complex Functions

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Analytic Functions (Cauchy Riemann Equations) and compex numbers	1	Browse
Complex Integral	0	Browse
Topic-wide	23	Browse

Probability and Statistics

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Probability	0	Browse
Statistics	0	Browse
Random Variable	0	Browse
Topic-wide	32	Browse

Numerical Methods

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Solution of Non-Linear Equation	0	Browse
Numerical Integration	0	Browse
Numerical Solution of Differential Equations	0	Browse
Topic-wide	14	Browse

Transform Theory

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Laplace Transform	0	Browse
Fourier Transform	0	Browse
Z-Transform	0	Browse
Topic-wide	5	Browse

General Aptitude

211

Numerical Ability

116

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Analytical Reasoning	0	Browse
Logical Reasoning	0	Browse
Progressions	0	Browse
Numbers	0	Browse
Clocks and Time Sequence	0	Browse
LCM and HCF, Factors and Remainders	0	Browse
Simple and Compound Interest	0	Browse
Venn Diagrams	0	Browse
Direction Sense	0	Browse
Arithmetic Reasoning	0	Browse
Insert Missing Character	0	Browse
Ratio and Proportion	0	Browse
Percentage, Profit, Loss and Partnerships	0	Browse
Stocks and Shares	0	Browse
Average, Mixtures and Allegations	0	Browse
Geometry and Mensuration	0	Browse
Ages	0	Browse
Time and Work	0	Browse
Pipes and Cisterns	0	Browse
Time and Distance	0	Browse
Data Interpretation	0	Browse
Analytical Figures	0	Browse
Blood Relations	0	Browse
Coding and Decoding	0	Browse
Cube and Dice	0	Browse
Ranking	0	Browse
Speed and Relative Speed	0	Browse
Logarithms	0	Browse
Involution and Evolution	0	Browse
Probability	0	Browse
Permutation and Combinations	0	Browse
Quadratic Equations	0	Browse
Miscellaneous - Numerical Ability	0	Browse
Topic-wide	116	Browse

Verbal Ability

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Grammar	0	Browse
Spotting Errors	0	Browse
Objective Comprehension	0	Browse
Sentence Completion	0	Browse
Sentence Improvement	0	Browse
Analogy	0	Browse
Ordering of Sentences	0	Browse
Vocabulary	0	Browse
Critical Reasoning	0	Browse
Miscellaneous - Verbal Ability	0	Browse
Topic-wide	95	Browse