ELEMENTS OF MECHANICAL ENGINEERING / MECHANICAL - 2ND YEAR/ KUK

ME-101E

ELEMENTS OF MECHANICAL ENGINEERING

L T P THEORY: 75 MARKS

3 1 SESSIONAL: 25 MARKS

TOTAL: 100 MARKS

TIME: 3 HRS.

UNIT-I

PROPERTIES OF STEAM & BOILERS: FORMATION OF STEAM AT CONSTANT PRESSURE,

THERMODYNAMICS PROPERTIES OF STEAM, CONDITION OF STEAM, STEAM TABLES,

MEASUREMENT OF DRYNESS FRACTION BY THROTTLING CALORIMETER, CLASSIFICATION OF BOILERS,

COMPARISON OF WATER AND FIRE TUBE BOILERS MOUNTING AND ACCESSORIES WITH THEIR

FUNCTIONS, CONSTRUCTIONAL AND OPERATIONAL DETAILS OF COCHRAN AND BABCOCK AND

WILCOX BOILERS, PROBLEMS.

STEAM TURBINES AND CONDENSERS: CLASSIFICATION OF TURBINES, WORKING PRINCIPLE OF

IMPULSE AND REACTION TURBINE, COMPOUNDING OF IMPULSE TURBINE, COMPARISON OF

IMPULSE AND REACTION TURBINES, TYPES OF CONDENSERS, COOLING PONDS AND COOLING

TOWERS, CONDENSER AND VACUUM EFFICIENCIES.

UNIT-II

I.C. ENGINES AND GAS TURBINES: INTRODUCTION, CLASSIFICATION, CONSTRUCTIONAL DETAILS

AND WORKING OF TWO-STROKE AND FOUR-STROKE DIESEL AND PETROL ENGINES, OTTO, DIESEL AND

DUAL CYCLES, WORKING PRINCIPLE OF GAS TURBINE, CONSTANT PRESSURE GAS TURBINE CYCLE.

WATER TURBINES, PUMPS AND HYDRAULIC DEVICES: INTRODUCTION, CLASSIFICATION,

CONSTRUCTION DETAILS AND WORKING OF PELTON, FRANCIS AND KAPLAN TURBINES, SPECIFIC

SPEED AND SELECTION OF TURBINES, CLASSIFICATION OF WATER PUMPS AND THEIR WORKING,

HYDRAULIC JACK AND LIFT.

UNIT-III

SIMPLE LIFTING MACHINES: DEFINITION OF MACHINE, VELOCITY RATIO, MECHANICAL

ADVANTAGE, EFFICIENCY, LAWS OF MACHINES, REVERSIBILITY OF MACHINE, WHEEL AND AXLE,

DIFFERENTIAL PULLEY BLOCK, SINGLE, DOUBLE AND TRIPLE START WORM AND WORM WHEEL,

SINGLE AND DOUBLE PURCHASE WINCH CRABS, SIMPLE AND COMPOUND SCREW JACKS.

PROBLEMS.

UNIT-IV

STRESSES AND STRAINS: INTRODUCTION, CONCEPT & TYPES OF STRESSES AND

STRAINS, POISON’S RATIO, STRESSES AND STRAINS IN SIMPLE AND COMPOUND BARS

UNDER AXIAL LOADING, STRESS-STRAIN DIAGRAMS, HOOKS LAW, ELASTIC CONSTANTS &

THEIR RELATIONSHIPS, PRINCIPLE STRESSES & STRAINS AND PRINCIPAL- PLANES, MOHR’S

CIRCLE OF STRESSES. NUMERICAL PROBLEMS.

BENDING MOMENT & SHEAR FORCE: DEFINITIONS, SF AND BM DIAGRAMS FOR CANTILEVER

AND SIMPLY SUPPORTED BEAM. CALCULATION OF MAXIMUM SF, BM AND POINT OF CONTRAFLEXURE

UNDER THE LOADS OF (I) CONCENTRATED LOAD (II) UNIFORMLY DISTRIBUTED LOAD (III)

COMBINATION OF CONCENTRATED AND UNIFORMLY DISTRIBUTED LOADS. PROBLEMS.

TEXT BOOKS:

1. STRENGTH OF MATERIALS - G.H. RYDER, PUB.- ELBS.

2. HYDRAULIC AND FLUID MECHANICS – MODI AND SETH, PUB. – STANDARD BOOK HOUSE,

NEW DELHI

3. ENGINEERING THERMODYNAMICS – C.P. ARORA, PUB. - TMH, NEW DELHI

4. THERMAL ENGINEERING – A.S. SARAD, PUB. - SATYA PRAKASHAN, NEW DELHI.

5. ENGINEERING MECHANICS – K.L. KUMAR, PUB. - TMH, NEW DELHI.

6. THEORY OF MACHINES – S.S. RATTAN, PUB. – TMH, NEW DELHI.

REFERENCE BOOKS:

1. STRENGTH OF MATERIALS – POPOV, PUB. - PHI, NEW DELHI.

2. HYDRAULIC MACHINES – JAGDISH LAL, PUB.- METROPOLITAN, ALLAHBAD.

3. THERMAL SCIENCE AND ENGINEERING – D.S. KUMAR, PUB. – KATERIA & SONS, NEW

DELHI.

NOTE: THE EXAMINERS WILL SET EIGHT QUESTIONS, TAKING TWO FROM EACH UNIT. THE STUDENTS ARE REQUIRED TO ATTEMPT FIVE QUESTIONS IN ALL SELECTING AT LEAST ONE FROM EACH UNIT. ALL QUESTIONS WILL CARRY EQUAL MARKS.