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1. DMRC
DELHI METRO RAIL CORPORATION LTD
Junior Engineer
Electronics
Paper - I and II
Guide
and Practice Book

2. DMRC-Junior Engineer Electronics - Paper - I and II Exam Guide and Practice Book
Content Contribution : Amar Ujala Education Books Authors’ Panel
Vikas Dwivedi
© Amar Ujala Publications Ltd.
Published by Amar Ujala Publications Ltd.
and printed at C-21, Sector 59, Noida - 201301 (U.P.)
Edition : 2016
Prize : ` 350/-
Due care and diligence has been taken while publishing this book. However, the publisher does not hold
any responsibility for any mistake that may have inadvertently crept in. The publisher does not accept
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All rights reserved. Neither this publication nor any part of it may be reproduced, stored in a retrieval sys-
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wise, without the prior written permission of the publisher.
All disputes are subject to the exclusive jurisdiction of competent courts and forums in Noida only.

3. q Current Affairs ....................................................................................5 - 37
Electronics / Engineering
CONTENTS
DMRC
JUNIOR ENGINEER/ELECTRONICS
l Networking Concept.................. 38-41
l Electromagnetism...................... 42-50
l Control System ......................... 51-54
l Digital Electronics ..................... 55-58
l Electron Tubes ......................... 59-65
l Semi-Conductors ...................... 66-71
l Transistors ................................. 72-74
l Electrical Measuring
Instruments ............................... 75-85
l Engineering Materials ............... 86-88
l Computer and
Microprocessors........................ 89-91
l Amplifiers and Oscillators........ 92-96
l Linear and Non-Linear
Analog Circuits.......................... 97-98
l Objective Questions ............... 99-128
General Awareness
l Indian History............................. 1-31
l Geography................................. 32-71
l Indian Polity.............................. 72-97
l Indian Economy ..................... 98-115
l General Science.................... 116-162
l Computer Knowledge........... 163-196

4. 4
l Analogy.................................. 197-203
l Classification .......................... 204-208
l Series Test ............................ 209-217
l Coding and Decoding........... 218-226
l Logical Sequence of Words .. 227-229
l Direction Sense Test ............ 230-239
l Blood Relation Test ............. 240-244
l Mathematical Operation ....... 245-250
l Finding the Missing
Numbers ............................... 251-256
l Cube and Dice ..................... 257-262
l Venn Diagrams ..................... 263-268
l Syllogism ............................... 269-275
l Statement and Conclusion.... 276-280
l Figure Analogy Test ............. 281-289
l Figure Classification .............. 290-292
l Figure Series Test................. 293-306
l Figure Completion Test ....... 307-312
l Embedded or Hidden
Figures ................................... 313-317
Mathematics
l Number System.................... 318-327
l Simplification ........................ 328-332
l LCM and HCF ..................... 333-337
l Average.................................. 338-343
l Percentage ............................. 344-349
l Ratio and Proportion............ 350-354
l Square Root and
Cube Root............................. 355-359
l Problems Based on Ages..... 360-364
l Time and Work ................... 365-370
l Time, Speed and Distance .. 371-376
l Profit and Loss ..................... 377-382
l Simple Interest...................... 383-389
l Compound Interest .............. 390-398
l Partnership ............................ 399-403
l Mixture and Alligation.......... 404-408
l Mensuration-I (Area and
Perimeter of Plane Figures). .. 409-417
l Mensuration-II (Volume
and Surface Area of
Solids).................................... 418-428
l Geometry .............................. 429-442
l Data Interpretation................ 443-459
General English
l Common Errors ................... 460-475
l Synonyms and Antonyms .... 476-483
l One Word Substitutions...... 484-491
l Spelling Test ......................... 492-499
l Active and Passive Voice ..... 500-509
l Idioms and Phrases .............. 510-520
l Direct and Indirect
Narration ............................... 521-532
l Sentence Improvement ........ 533-539
l Rearrangement of Sentences...540-552
l Cloze Test............................. 553-557
l Comprehension .................... 558-568
Reasoning

5. 5
CurrentAffairs AmarUjalaPublication
1 NOVEMBER
INDIAN AFFAIRS
r Union Government announces Draft Aviation
Policy-2015
r India, Sri Lanka bilateral naval exercise
SLINEX 15
r Indian Railways launches Vikalp scheme for
waitlisted passengers
r A new scheme called ‘Vikalp’ has come into
effect that promises a confirmed seat for the
waitlisted passengers in an alternate train if they
opt for the option while booking their
tickets online. The pilot project was started
on November 1, for trains running on the Delhi-
Lucknow and Delhi-Jammu routes.
r Punjab to set up bio-ethanol refinery to stop
menace of straw burning
r Punjab government signed a Memorandum of
Understanding (MoU) with a consortium of Beta
Renewables, Novozymes and CVC India Infra-
structure Pvt. Ltd. For an estimated project
worth Rs. 950 crore, during the Progressive
Punjab Investor Summit, 2015 .
r Govt will implement Malayalam LanguageAct
r Kerala Cultural Affairs minister KC
Joseph announced on the sidelines of the
Kerala Formation Day celebrations that the fed-
eral government is dedicated to implement the
Malayalam Language Act on the earliest.
APPOINTMENTS
r Housing.com appoints Nikhil Rungta as chief
marketing officer
r Housing.com a real estate platform has
appointed Nikhil Rungta as its Chief Market-
ing Officer.
r B K Bansal appointed member of CBEC
r IRS officer Bhushan Kumar Bansal has been
appointed as the sixth member of the Central
Board of Excise and Customs (CBEC), the apex
body on indirect taxes filling up the last vacancy
on the board.
r Air Marshal Khanna Takes Over as Mainte-
nance Head of the Indian Air Force (IAF)
r Air Marshal Virender Mohan Khanna assumes
the responsibilities of Air Officer-in-charge
Maintenance (AOM) at Air Headquarters, New
Delhi
SCIENCE & TECHNOLOGY
r BrahMos missile test-fired from Indian Navy’s
newest ship INS Kochi, hits target
r Supersonic cruise missile BrahMos with a strike-
range of over 290 kms was test-fired from the
navy’s newest stealth destroyer INS
Kochi successfully hitting a decommissioned
target ship in the Arabian Sea.
SPORTS
r Sania Mirza-Martina Hingis seal WTAYear-
End No.1 ranking
r Newzealand wins 2015 Rugby World Cup
r Newzealand have won a record third Rugby
World Cup and become the first team to suc-
cessfully defend the title after
beating Australia 34-17 in the final at
Twickenham on Oct 31, 2015.
r OBITUARY
r Eminent Archaeologist VN Misra passes away
r Professor and renowned archaeologist
Virendra Nath Misra passed away at the age of
80 on 31st October 2015.
2 NOVEMBER
INDIAN AFFAIRS
r Delhi Metro bags ISO rating for efficient en-
ergy management
r The Delhi Metro has become the first metro
service in the country to be certified with the
CURRENT AFFAIRS

6. 6
AmarUjalaPublication CurrentAffairs
prestigious International Organisation for
Standardisation (ISO) rating for efficient energy
management.
r MHRD constituted TSR Subramanian commit-
tee to draft New Education Policy
r Union Ministry of Human Resource
Development (MHRD) on 31 October 2015 con-
stituted a drafting committee to frame the New
Education Policy (NEP). It will be headed by
former Cabinet Secretary TSR Subramanian and
will have four members-
r Odisha Government imposes 7- month ban on
fishing to protect Olive Ridley sea turtles
r To protect the Endangered Olive Ridley sea
turtles arrive during winters for nesting in
Rushikulya river mouth and the Gahirmatha
marine sanctuary (one of the world’s
largest turtle nesting sites), the Odisha forest
department has imposed a ban for 7 months from
November 1 to May 31, 2016 on fishing along
the coast.
INTERNATIONAL AFFAIRS
r Turkey’s AK Party wins 2015 general election
of Turkey
r The ruling Justice and Development Party
(AKP) of Turkey has won 2015 Parliamentary
Election of Turkey. AKP had won 49.4 per
cent of the vote, with the main opposition CHP
on 25.4 per cent.
r AKP won 316 seats of total 550 members while
CHP won 134 seats, HDP won 59 seats and
MHP won 41 seats. In Turkey The Political Par-
ties need to secure 276 seats to govern the
country alone.
APPOINTMENTS
r Deepak Singhal appointed Executive Director
of RBI
r The Reserve Bank of India (RBI) on 2 Novem-
ber 2015 appointed Deepak Singhal as
the Executive Director (ED). The appointment is
effective from the same date.
r Federal Bank appoints Shalini Warrier as
COO
r Federal Bank a Privately-held bank has
appointed Shalini Warrier as Chief Operating
Officer (COO).
ACQUISITION AND MERGERS
r MTS India merged with Reliance Communica-
tions
r Anil Ambani-led Reliance Communications Ltd
(R-Com) is merging the telecom business
of Sistema Shyam Teleservices Ltd (SSTL) that
operates MTS brand with itself in an all-stock
deal worth Rs. 4,500 crore, marking the start of
the much-anticipated consolidation in India’s
telecom sector.
SCIENCE & TECHNOLOGY
r Environment Ministry Launches New Website
on National Clean Development MechanismAu-
thority
r A new website – http://www.ncdmaindia.gov.in
has been launched by the National Clean De-
velopment Mechanism Authority (NCDMA) in
the Ministry of Environment, Forests and Cli-
mate Change.
r SPORTS
r Nico Rosberg wins 2015 Mexican Gand Prix of
Formula 1
r Mercedes Formula One team driver Nico Erik
Rosberg from Germany won the 2015 Mexican
Gand Prix title of Formula One (F1) which was
held at the Autódromo Hermanos Rodríguez
in Mexico City.
r Roger Federer wins 2015 Swiss Indoors Basel
Title of Tennis
r After a 21 month wait, Federer and Nadal re-
newed their storied rivalry on the indoor hard
courts of the ATP world tour 500 event, with the
Swiss winning for the first time since 2012 BNP
Paribas Open in Indian wells.
OBITUARY
r Doyen of Indian two-wheeler industry
Brijmohan Lall Munjal passes away
r Former Speaker of West Bengal HashimAbdul
Halim passes away

7. 7
CurrentAffairs AmarUjalaPublication
r CPM veteran and Former West Bengal Assem-
bly Speaker Hashim Abdul Halim passed away
in Kolkata. He was 80. Halim had a record of
serving as the Assembly speaker for 29 long
years from 1982 to 2011 during the Left Front
rule.
BOOKS & AUTHORS
r First copy of book on ‘The President of India
and the Governance of Higher Education Insti-
tutions’ presented to the President
r The President of India, Shri Pranab
Mukherjee received the first copy of a book
‘The President of India and the Governance of
Higher Education Institutions’ (November 2,
2015) at Rashtrapati Bhavan from the Founding
Chancellor Mr. Naveen Jindal and Founding Vice
Chancellor, Professor (Dr.) C. Raj Kumar of O.P.
Jindal Global University.
3RD
NOVEMBER
INDIAN AFFAIRS
r National Tribal Crafts Mela Aadishilp-2015
begins in New Delhi
r Union Tribal Affairs Minister Shri Jual
Oram inaugurated National Tribal Crafts Mela
Aadishilp at Dilli Haat in New Delhi on 2 No-
vember, 2015.
r Mysuru becomes first visually impaired-
friendly railway station
r Mysuru MP Pratap Sinha inaugurated the facil-
ity the country’s first visually challenged
friendly station in Karnataka.
r Dr Jitendra Singh inaugurates 7th Nuclear
Energy Conclave in New Delhi
r The Union Minister of State (Independent
Charge) Development of North Eastern Region
(DoNER), MoS PMO, Personnel, Public Griev-
ances, Pensions, Atomic Energy and Space Dr
Jitendra Singh inaugurates 7th Nuclear Energy
Conclave in New Delhi and he said that India’s
nuclear programme is ahead of many other na-
tions and truly testifies the Make in India initia-
tive.
INTERNATIONAL AFFAIRS
r Punjabi became third most common language
in Parliament of Canada
r Punjabi became Canada’s third most common
language obtained the same position in the
country’s Parliament after
English and French followed by the polling of
20 Punjabi-speaking entrants to the House of
Commons. The voice of the Indo-Canadian com-
munity will now be very well interpreted in the
parliament.
APPOINTMENTS
r IPL COO Sundar Raman resigns, BCCI ac-
cepts resignation
r Indian Premier League Chief Operating Officer
(COO) Sundar Raman has resigned from his
position. In an effort to clean up the system, the
BCCI has promptly accepted Raman’s resigna-
tion. It has been learnt that he had been asked
by BCCI President Shashank Manohar to put in
his papers by October 31.
r Manpreet Vohra appointed India’s new envoy to
Afghanistan
r Senior diplomat Manpreet Vohra has been ap-
pointed as India’s Ambassador to strategically
important Afghanistan, succeeding Amar Sinha.
AWARDS & RECOGNITIONS
r AIR programme on Child Labour wins 2015
ABU Prizes
SCIENCE & TECHNOLOGY
r Fast patrol vessel ICGS Arinjay commissioned
in Kochi
SPORTS
r Mana Patel, Virdhawal won best swimmers’
award in 69th senior National Aquatic Cham-
pionships
r India goalkeeper Gurpreet Singh Sandhu set
for Europa tryst
r Gurpreet Singh Sandhu created history by be-
coming the first Indian footballer to play for a
first division European club, goalkeeper Gurpreet

8. 8
AmarUjalaPublication CurrentAffairs
Singh Sandhu added another feather to his cap
by ensuring that he would be the first from his
country to be part of a team scheduled to play
in the Europa League next season.
OBITUARY
r Actor and Oscar-winning writer Colin Welland
passes away
r Academy Award-winning British actor and
screen writer Colin Welland has died at 81 af-
ter years of struggling with Alzheimer’s disease.
Welland was born to John Arthur "Jack" and
Norah Williams in Leigh, Lancashire in 1934.
Welland started his acting career in the BBC’s
TV series, "Z-Cars". He then starred as a (seem-
ingly prophetic) villain Frank Chadwick in an
episode of the 1970’s British TV police drama.
4 November
INDIAN AFFAIRS
r Maharashtra Government approvesAPJAbdul
KalamAmrutYojna
INTERNATIONAL AFFAIRS
r ·India ranks 99 on Global Prosperity Index
r Taiwan and China to hold historic meet for the
first time
r Taiwan’s President Ma Ying-jeou will meet
his Chinese counterpart Xi Jinping in
Singapore on relations across the Taiwan
Straits. China claims sovereignty over Taiwan
and views the island as a breakaway province
which will one day be reunited with the main-
land.
APPOINTMENTS
r Flipkart names Google executive Chatterjee Sr
Vice President
r Homegrown e-commerce giant Flipkart said that
Google’s Surojit Chatterjee will join the com-
pany as Senior Vice President and Head of Con-
sumer Experience and Growth.
SPORTS
r Indian Boxer Shiva Thapa attained No.2 spot in
World Rankings
r Michelle Payne becomes first female jockey to
win Melbourne Cup
r Pakistani Cricketer Shoaib Malik announces
retirement from Test Cricket
r Former captain of Pakistan cricket team Shoaib
Malik (33) announced his Test retirement after
the third day’s play of the third Test against
England in Sharjah.
OBITUARY
r Former England Cricketer Tom Graveney died
r Former England captain and MCC president Tom
Graveney died at age 88. Graveney, who was
born in Northumberland, was Worcestershire
president from 1994-98..
5 NOVEMEBR
INDIAN AFFAIRS
r Union Cabinet gives nod to UDAY Scheme for
financial restructuring package for power
DISCOMs
r PM launches gold schemes, coin with Ashok
Chakra
r Union Cabinet gives nod to MoU on Tourism
with Colombia
r NGT bans age-old agricultural practice of
straw burning in Northern States
r National Green Tribunal (NGT) has banned age-
old agricultural practice of straw burning in pol-
lution-ravaged New Delhi announced by a is a
bench headed by NGT chairperson
Justice Swatanter Kumar directed the Delhi
government. Imposition of 2,500 to 15,000 ru-
pees fine on farmers indulged in straw burning.
r Daughters cannot inherit ancestral property if
father died before 2005: SC
r By disappointing many women in the country,
the apex court (Supreme court) announced that
the 2005 amendment in Hindu law will not give
property rights to a daughter if the father died
ahead the amendment took place. If the daugh-
ter want to become a co-sharer with her broth-

9. 9
CurrentAffairs AmarUjalaPublication
ers, the father would have to be alive
on September 9, 2005.
r Varanasi selected for Microsoft’s experimen-
tal Internet pilot project
r On a 1-day visit to India Microsoft’s CEO Satya
Nadella selected holy city Varanasi (PM
Narendra Modi’s constituency) for experiment-
ing technology pilot for the ardent Digital India
programme.
INTERNATIONAL AFFAIRS
r UNGA Disarmament Committee adopts draft
resolution backing abolition of nuclear arms
r The United Nations General Assembly’s
(UNGA) Disarmament Committee has adopted a
draft resolution submitted by Japan calling for
the abolition of nuclear arms.
APPOINTMENTS
r Ravikumar Sreedharan appointed as MD of
Unisys Corporation India
r IT solutions company Unisys Corporation has
appointed Ravikumar Sreedharan as managing
director of its India unit from October 31.
Sreedharan, who was leading the application
services group in Unisys India takes on addi-
tional charge as MD from Kumar Prabhas.
r Maldives Parliament impeaches Vice President
AhmedAdeebAbdul Ghafoor
r Maldives police arrested the country’s vice
president over his involvement in a blast on a
speedboat carrying the country’s president.
r Justin Trudeau sworn in as Prime Minister of
Canada
r Justin Trudeau, Canada’s new leader, sworn in
as 23rd prime minister of Canada.
AWARDS
r Actor Vikram Gokhale awarded 2015
Vishnudas BhaveAward
SPORTS
r 2015 Paragliding World Cup concluded
r Jitu Rai won silver in 13th Asian Shooting
Championship
r Ace shooter Jitu Rai won India’s first senior
medal at the 13th Asian Shooting Champion-
ship, finishing second behind Korea’s Park
Daehun in the finals of the men’s 50m pistol.
OBITUARY
r Former Indian Ambassador to Nepal Bimal
Prasad passes away
r A close partner of Jayaprakash Narayan Bimal
Prasad (92) India’s former Ambassador to
Nepal passed away.
r Widely known for his study of the Indian inde-
pendence movement, especially on the prosper-
ous foreign policy of the Indian national con-
gress, written many analysis of Foreign
Affairs in the South Asian region.
BOOKS AND AUTHORS
r ISRO releases book on Indian Space
Programme
r Prof U R Rao, Chairman, PRL Council and
Former Chairman, ISRO released a book on In-
dian Space Programme "From Fishing Hamlet
to Red Planet" to commemorate second anniver-
sary of Mars Orbiter Spacecraft launched.
6 NOVEMBER
INDIAN AFFAIRS
r CCEA hikes MSP for major Rabi crops includ-
ing wheat, gram and pulses
r President launches IMPRINT India initiative of
IITs and IISC
r 17 MoUs for Academia –Industry Linkages
signed between NIPERs and Pharma Industry
r Madhya Pradesh proposes Rs.1,656 crAMRUT
Action Plan
INTERNATIONAL AFFAIRS
r France to deploy its largest warship against IS
in Syria and Iraq
r France will deploy its aircraft carrier to support
operations against Islamic State in
Syriaand Iraq said by President Francois
Hollande .The carrier is usually accompanied by
an attack submarine, several frigates, refuelling
ships, as well as fighter jets and surveillance
aircraft.

10. 10
AmarUjalaPublication CurrentAffairs
BANKING & FINANCE
r RBI imposes Rs 1 crore penalty on Dhanlaxmi
Bank
r Reserve Bank of India imposed a Rs 1-crore
penalty on Dhanlaxmi Bank for non-adherence to
KYC (know your customer) and anti-money
laundering guidelines.
r RBI includes Bandhan Bank in second sched-
ule list
r Reserve Bank announced that that Bandhan
Bank has been included in the second sched-
ule list to making it eligible for loans from the
central bank at bank rate under the Reserve
Bank of India Act.
r Bandhan Bank :
r It received an in-principle approval from the RBI
in April 2014 and the banking regulator’s final
nod on June 17, 2015.
APPOINTMENTS & RESIGNS
r Navtej Singh Sarna to be new High Commis-
sioner to UK
r Navtej Singh Sarna an Indian Foreign Service
officer of 1980 batch, will be India’s next high
commissioner to UK announced by the exter-
nal affairs ministry .
AWARDS AND RECOGNITIONS
r World’s 3rd Sanskrit film to open IFFI in Goa
r Priyamanasam the third Sanskrit feature film to
be made in India, has been selected to open at
the 46th edition of the 10-day International Film
Festival of India (IFFI) in Goa, which will begin
from November 20.
SCIENCE & TECHNOLOGY
r Australian scientists identify way to target neu-
roblastoma cancer
r Australian scientists have identified a critical
molecular ‘feedback loop‘ that helps initiate and
drive neuroblastoma, a cancer of the nervous
system in children that is triggered in embryo-
nal nerve cells.
r Scientists develop 3-D printing method to make
embryonic stem cells
r Scientists from China and United States have
developed a 3-D printing method to produce
highly uniform ‘blocks’ of embryonic stem cells.
The new method used extrusion-deposition
based 3-D printing technology to produce a
grid-like 3-D (three dimensional) cell structure to
grow embryoid body.
SPORTS
r Deepika and Jayanta wins bronze at Asian Ar-
chery Championship
r Deepika Kumari and Jayanta Talukdar clinched
the bronze in the Recurve Mixed team event
after beating Chian 5-3 at the Asian Archery
Championships
OBITUARY
r French intellectual Rene Girard passed away
r French intellectual Rene Girard, an academic fas-
cinated in the causes of conflict who earned the
nickname "the new Darwin", died Wednesday
in the US, Stanford University said. He was 91.
7 NOVEMBER
INDIAN AFFAIRS
r Union Government decided to impose 0.5%
Swachh Bharat Cess on all services
r Government has decided to impose 0.5%
Swachh Bharat Cess on all services with effect
from November 15, 2015, which are presently
liable to service tax announced by Finance
Minister Arun Jaitley
r Child born out of rape has right over assaulter’s
property:Allahabad High Court
r Recent judgement made by Allahabad High
Court has administered that the child will be
treated as an illegitimate child of the rape ac-
cused and will have inheritance rights to his
property and advised that a just law may be
depicted by the legislature to deal with this
knotty social issue.
APPOINTMENTS & RESIGNS
r Romania’s Prime Minister Victor Ponta re-
signed
r Romania’s Prime Minister resigned after
being charged for forgery, tax evasion, and