Registration No :
Total Number of Pages : 03
2nd Semester Regular / Back Examination 2017-18
ELECTRICAL & ELECTRONICS ENGINEERING
BRANCH : AEIE, AERO, AUTO, BIOMED, BIOTECH,
CHEM, CIVIL, CSE, ECE, EEE, EIE, ELECTRICAL, ENV, ETC, FAT, IEE, IT, MANUFAC,
MANUTECH, MECH, METTA, MINERAL, MINING, MME, PE, PLASTIC, PT, TEXTILE
Time : 3 Hours
Max Marks : 100
Q.CODE : C705
Answer Part-A which is compulsory and any four from Part-B.
The figures in the right hand margin indicate marks.
Answer all parts of a question at a place.
Part – A (Answer all the questions)
Answer the following questions:multiple choice and fill in the blanks:
(2 x 10)
The resistance of a copper wire is R ohm. This wire is stretched to its double
length. The new resistance is,
(ii) 4R Ω
(iv) R/2 Ω
The average power in purely inductive circuit for one complete cycle is
Binary representation of the decimal number 25 is
The current gain of BJT in common base is
(iv) none of these.
The rms value of 200 V DC supply is ______________ .
The ripple factor of half wave rectifier is _______ and for full wave rectifier is ________
The mobility of electrons in a materials is expressed in unit of _________
A three Phase balanced delta connected load is connected to symmetrical
three phase 440 V balanced supply. The current in each phase is 15 A and
leads 60 degree ahead of the corresponding phase voltage. Then line current
will be ___
A two pole DC generator running at 1500 rpm has 40 conductors. The flux per
pole is 1mWb. The induced emf if the armature winding is ________ for lap
connected and _________ for wave connected.
According to 1oolean law: A + 1 = ______ and A + 0 =__________
Answer the following questions: Short answer type:
Three resistor of resistance (R1=10 Ω, R2=5 Ω and R3=3 Ω) are connected in
star network, convert it into delta network and find out its equivalent delta
Define Unilateral and bilateral elements.
Convert following number into decimal number (i) 34.858 (ii) 110.101012
Draw the circuit diagram of half wave rectifier.
State De morgen’s theorem.
Calculate the time taken by a capacitor of 1 µF in series with a 1M Ω resistance
to be charged up to 80% of the final value.
What is apparent power, active power and reactive power?
What is P and N type semiconductor?
(2 x 10)