Basic Electrical Engineering (KEE201T) - AKTU Question Paper 2021-22
B.Tech · Semester 2 · Free PDF Download
This is the official AKTU Basic Electrical Engineering Previous Year Question Paper for B.Tech Semester 2, academic session 2021-22. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.
Course:B.Tech
Semester:Semester 2
Session:2021-22
University:AKTU / UPTU
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Questions Asked in 2021-22
Basic Electrical Engineering (KEE201T) — complete question paper
Section AAttempt All of the following Questions in brief Marks (10*2=20) CO
- aDraw the V-I characteristics for ideal voltage source and ideal current source. 1
- bWhy is linearity important in circuits? 1
- cWhy do we represent A.C. by sinusoidal waveform? 2
- dWhy the average power consumed in purely inductive circui t is zero? 2
- eWhat is the nature of load for negative voltage regulation in the transformer? 3
- fDraw the phasor diagram fo r an ideal transformer on no load. 3
- gWhat is the generated EMF in D.C. generator? 4
- hWhy synchronous motor is doubly excited? 4 Q1(i) What are the common problems that occur during electrical installations? 5 Q1(j) Write any two battery char acteristics. Also, define any one. 5
Section BAttempt ANY THREE of the following Questions Marks(3*10=30) CO
- aCalculate equivalent resistance across terminals A and B using star-delta or delta-star conversion for the given figure below
- bConsider the circuit shown in figure below and calculate the following
- aDetermine the resonant frequencies, ω(rad/s) and f(Hz) of the tank circuit
- bFind the Q of the circuit at resonance
- cCalculate the voltage across the circuit at resonance
- dSolve for currents through the inductor and the resistor at resonance
- cState the significance of the regulation of transformer. A 4kVA, 200/400 V, 50 Hz, single phase transformer has equivalent resistance referred to primary as 0.15 Ω. Calculate, (i) The total copper losses on full load (ii) The efficiency while supplying full load at 0.9 power factor lagging (iii) The efficiency while supplying half load at 0.8 power factor leading. Assume total iron losses equal to 60 W
- dW h a t a r e t h e f a c t o r s a f f e c t i n g s p e e d o f a D C m o t o r ? C o m p a r e l a p and wave type armature winding
- eDraw and explain the characterist ics of a battery. Calculate th e backup of a battery o f 150AH connected to load of 150 watts, and the supply voltage is 12V
Section CAttempt ANY ONE following Question Marks (1*10=10) CO
- aDetermine the current through A-B in the given circuit using Norton’s theorem
- bUsing the Nodal method, find the current through resistor r2 in the given figure below. 1
Section CAttempt ANY ONE following Question Marks (1*10=10) CO
- aDerive mathematically dynamic impedance (Z D) offered by RLC parallel circuit under resonance. Also, draw its phasor diagram
- bTwo coils having resistance 5 Ω and 10 Ω and inductances 0.04 H and 0.05 H respectively are connected in parallel across a 200 V, 50 Hz supply. Calculate: i. Conductance, susceptance and admittance of each coil. ii. Total current drawn by the circuit and its power factor. iii. Power absorbed by the circuit
Section CAttempt ANY ONE following Question Marks (1*10=10) CO
- aWhat is the purpose of an equivalent circuit of a transfo rmer? Obtain the approximate equivalent circuit of a transformer as referred to the primary with all necessary parameters
- bA 20kVA, 2000V/200V, single-phase, 50 Hz transformer has a primary resistance of 1.5 Ω and reactance of 2 Ω. The secondary resistance and reacta nce are 0.015 Ω and 0.02 Ω respectively. The no load current of transformer is 1A a t 0.2 power factor. Determine: (i) Equivalent resistance, reactance and impedance referred to primary (ii) Supply current (iii) Total copper loss Draw approximate equivalent circuit
Section CAttempt ANY ONE following Question Marks (1*10=10) CO
- aDerive an expression for torque in DC motor. A 230V DC series m otor draws a 50A current. Armature and series field winding resistances are 0.2 Ω and 0.1 Ω, respectively. Calculate (i) brush voltage and (ii) back EMF
- bWhy is an induction motor called a generalized transformer? Com pare the induction motor with the transformer
Section CAttempt ANY ONE following Question Marks (1*10=10) CO
- aHow do you calculate energy consumption per kWh? Calculat e the electricity bill amount for a leap year, if the following devices are used as specified. (A) 3 Bulbs of 40W for 6 hours per day (B) 4 Tube lights of 50W for 8 hours per day Given the rate of electricity is Rs. 7.50 per unit
- bExplain the construction, rating, specific applications of at l east two types of wires and cables used in electrical installations
Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.
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