hydraulics and fluid power control system multiple choice questions and answers PDF

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WHEN VENTURIMETER IS INCLINED ,THEN FOR A GIVEN FLOW IT WILL SHOW A) SAME READING B) LESS READING C) more READING D) NONE OF THE ABOVE ANSWER:A ROTAMETER IS USED TO MEASURE A) RPM B) PRESUURE C) VELOCITY D) FLOW ANSWER:D THE HYDRAULIC RADIUS IS GIVEN BY A) SQUARE ROOT OF AREA B) MEAN DIAMETER OF PIPE C) AREA BY WETTED PERIMETER D) WETTED PERIMETER DIVIDED BY AREA ANSWER:D THE VALUE OF COFFICIENT OF VELOCITY COMPARED TO COEFFICIENT OF DISCHARGE A) IS SAME B) IS LESS C) IS MORE D) HAS NO RELATION ANSWER:C THE SHEAR STRESS IN A FLUID FLOWING IN A ROUND PIPE A) IS CONSTANT B) IS ZERO AT THE WALL AND INCREASES LINERALY AT THE CENTRE C) IS ZERO AT CENTRE AND VARIES LINEARLY WITH RADIUS D) UNPREDICTABLE ANSWER:C BERNOULIIS THEOREM IS APPLICABLE FOR A) STREAMLINE FLOW B) STEADY LOW C) UNIFORM FLOW D) PERFECT INCOMPRESSIBLE FLUID FLOWING IN CONTINOUS STREAMS. ANSWER:D THE CONTINUITY EQUATION RELATES A) CONSEERVATION OF MASS AND MOMENTUM B) ENERGY AND WORK C) FRICTIONLESS LOSSES D) MASS RATE OF FLOW ALONG A STREAMLINNE ANSWER:D DARCY-WEISBACH FORMULA FOR HEAD LOSS DUE TO FRICTION? WHERE, f = COEFFICENT OF FRICTION

A) hf = (f l V2) / (g d) B) hf = (f l V2) / (2 g d) C) hf = (4 f l V2) / (2 g d) D) hf = (16 f l V2) / (2 g d) ANSWER:C IN A STATIONERY VERTICAL PLATE,THE JET AFTER STRIKING THE PLATE WILL MOVE _______ A) IN OPPOSITE DIRECTION B) ALONG THE PLATE C) PERPENDICULAR TO PLATE D) PARALLEL TO THE PLATE Answer:B AT WHAT ANGLE DOES THE JET DEFLECT AFTER STRIKING A STATIONERY VERTICAL PLATE? A) 30 B) 60 C) 90 D) 0 Answer:C MINOR LOSSES OCCUR DUE TO A) SUDDEN ENLARGEMENT IN PIPE B) SUDDEN CONTRACTION IN PIPE C) BENDS IN PIPE D) ALL OF THE ABOVE ANSWER:D CHEZY'S EQUATION IS USED TO DETERMINE A) VELOCITY OF FLOW IN OPEN CHANNEL B) VELOCITY OF FLOW IN PIPE C) bends in pipe D) DICHARGE THROUGH NOTCH ANSWER:A WHICH ONE OF THE FOLLOWING IS A MAJOR LOSS? A) FRICTIONAL LOSS B) SHOCK LOSS C) ENTRY LOSS D) EXIT LOSS ANSWER:A WHICH PROPERTY OF THE FLUID ACCOUNTS FOR THE MAJOR LOSSES IN PIPES? A) DENSITY B) SPECIFIC GRAVITY C) VISCOSITY D) COMPRESSIBILITY ANSWER:C THE FRICTIONAL RESISTANCE FOR FLUIDS IN MOTION IS A) INVERSELY PROPORTIONAL TO THE SQUARE OF THE SURFACE AREA OF CONTACT B) INVERSELY PROPORTIONAL TO THE SURFACE AREA OF CONTACT C) PROPORTIONAL TO THE SQUARE OF THE SURFACE AREA OF CONTACT

D) PROPORTIONAL TO THE SURFACE AREA OF CONTACT ANSWER:D WHICH ONE OF THE FOLLFLOWING IS CORRECT? A) DARCY-WEISBACH’S FORMULA IS GENERALLY USED FOR HEAD LOSS IN FLOW THROUGH BOT H PIPES AND OPEN CHANNELS B) CHEZY’S FORMULA IS GENERALLY USED FOR HEAD LOSS IN FLOW THROUGH BOTH PIPES AND OPEN CHANNELS C) DARCY-WEISBACH’S FORMULA IS GENERALLY USED FOR HEAD LOSS IN FLOW THROUGH BOT H PIPES AND CHEZY’S FORMULA FOR OPEN CHANNELS D) CHEZY’S FORMULA IS GENERALLY USED FOR HEAD LOSS IN FLOW THROUGH BOTH PIPES AND DARCY-WEISBACH’S FORMULA FOR OPEN CHANNELS ANSWER:C A LIQUID FLOWS THROUGH PIPES 1 AND 2 WITH THE SAME FLOW VELOCITY. IF THE RATIO OF TH EIR PIPE DIAMETERS D1 : D2 BE 3:2, WHAT WILL BE THE RATIO OF THE HEAD LOSS IN THE TWO PI PES? A) 3:2 B) 9:4 C) 2:3 D) 4:9 ANSWER:C THE HEAD LOSS AT THE ENTRANCE OF THE PIPE IS THAT AT IT’S EXIT A) EQUAL TO B) HALF C) TWICE D) FOUR TIMES ANSWER:B HYDRAULIC GRADIENT LINE TAKES INTO CONSIDERATION A) POTENTIAL AND KINETIC HEADS ONLY B) POTENTIAL AND PRESSURE HEADS ONLY C) KINETIC AND PRESSURE HEADS ONLY D) POTENTIAL, KINETIC AND PRESSURE HEADS ANSWER:B THE VERTICAL INTERCEPT BETWEEN EGL AND HGL IS EQUAL TO A) PRESSURE HEAD B) POTENTIAL HEAD C) KINETIC HEAD D) PIEZOMETRIC HEAD VIEW ANSWER ANSWER:C THE LIQUID FLOWING THROUGH A SERIES OF PIPES CAN TAKE UP__________ A) PIPES OF DIFFERENT DIAMETERS B) PIPES OF THE SAME DIAMETERS ONLY. C) SINGLE PIPE ONLY D) SHORT PIPES ONLY ANSWER:A

THE TOTAL HEAD LOSS FOR THE SYSTEM IS EQUAL TO_________ A) PIPE LENGTH B) PIPE DIAMETER C) WIDTH OF THE RESERVOIR D) HEIGHT DIFFERENCE OF RESERVOIRS ANSWER:D HOW DO WE DETERMINE THE TOTAL DISCHARGE THROUGH PARALLEL PIPES? A) ADD THEM. B) SUBTRACT THEM C) MULTIPLY THEM D) DIVIDE THEM ANSWER:A THE PIPE DIAMETER IS ________ A) DIRECTLY PROPORTIONAL TO FLUID DENSITY B) DIRECTLY PROPORTIONAL TO MASS FLOW RATE C) INVERSELY PROPORTIONAL TO MASS FLOW RATE D) DIRECTLY PROPORTIONAL TO FLUID VELOCITY ANSWER:B THE VELOCITY COMPONENT AFTER STRIKING THE SURFACE WILL BE________ A) ONE B) ZERO C) INFINITY D) NEGATIVE ANSWER:B WHICH AMONG THE FOLLOWING IS THE FORMULA FOR FORCE WHEN IT STRIKES THE PLATE? A) PAV2 B) PAV C) PA D) MAE ANSWER:A THE MASS OF WATER PER SEC STRIKING THE PLATE IS_________ A) PAV2 B) PAV C) PA D) MAE ANSWER:B WHICH AMONG THE FOLLOWING IS FORMULA FOR FORCE WHEN IT ACTS ALONG THE DIRECTION OF FLOW? A) PAV2SIN2Θ B) PAV SIN2Θ C) PA SIN2Θ D) MAE SIN2Θ ANSWER:A THE VELOCITY COMPONENT AFTER STRIKING THE SURFACE WILL BE________ A) ONE

B) ZERO C) INFINITY D) NEGATIVE ANSWER: B A JET STRIKES A CURVED PLATE AT ITS ______ A) SIDES B) SURFACE C) CENTRE D) DOES NOT STRIKE ANSWER:C A JET AFTER STRIKING A SMOOTH PLATE COMES OUT WITH A __________ VELOCITY. A) INCREASED B) DECREASED C) SAME D) ZERO ANSWER:C COMPONENT OF VELOCITY IN DIRECTION OF JET IS -VCOSΘ. WHAT DOES ‘Θ’ INDICATE? A) ANGLE MADE BY JET B) ANGLE MADE BY JET AND OUTLET TIP C) ANGLE MADE BY JET AND INLET TIP D) TANGENT ANGLE ANSWER:C THE EFFICIENCY OF POWER TRANSMISSION THROUGH PIPE IS (WHERE H = TOTAL SUPPLY HEAD, AND HF = HEAD LOST DUE TO FRICTION IN THE PIPE) A) (H - HF )/H B) H/(H - HF ) C) (H + HF )/H D) H/(H + HF ) ANSWER:A WHICH OF THE FOLLOWING METERS IS NOT ASSOCIATED WITH VISCOSITY? A) RED WOOD B) SAY BOLT C) ENGLER D) BERNOULLIS ANSWER:D THE POWER TRANSMITTED THROUGH THE NOZZLE IS MAXIMUM WHEN THE HEAD LOST DUE TO FRICTION IN THE PIPE IS __________ OF THE TOTAL SUPPLY HEAD. A) ONE-HALF B) ONE-THIRD C) TWO-THIRD D) NONE OF THESE ANSWER:B IN THE CASE OF STEADY FLOW OF A FLUID, THE ACCELERATION OF ANY FLUID PARTICLE IS A) CONSTANT B) VARIABLE

C) ZERO D) ZERO UNDER LIMITING CONDITIONS ANSWER:C THE PRESSURE MEASURED WITH THE HELP OF A PIEZOMETER TUBE IS IN A) N/MM2 B) N/M2 C) HEAD OF LIQUID D) ALL OF THESE ANSWER:C THE MERCURY DOES NOT WET THE GLASS. THIS IS DUE TO THE PROPERTY OF THE LIQUID KNOW N AS A) COHESION B) ADHESION C) VISCOSITY D) SURFACE TENSION ANSWER:D THE MAXIMUM EFFICIENCY OF TRANSMISSION THROUGH A PIPE IS A) 50 % B) 56.7 % C) 66.67 % D) 76.66 % ANSWER:C WATER IS _________ LIQUID. A) A COMPRESSIBLE B) AN INCOMPRESSIBLE C) BOTH A AND B D) NONE OF THESE ANSWER:B RAIN DROPS ARE SPHERICAL BECAUSE OF A) VISCOSITY B) AIR RESISTANCE C) SURFACE TENSION FORCES D) ATMOSPHERIC PRESSURE ANSWER:C ALL THE TERMS OF ENERGY IN BERNOULLI'S EQUATION HAVE DIMENSION OF A) ENERGY B) WORK C) MASS D) LENGTH ANSWER:D WHICH OF THE FOLLOWING INSTRUMENT CAN BE USED FOR MEASURING SPEED OF A SUBMARIN E MOVING IN DEEP SEA? A) VENTURIMETER B) ORIFICE PLATE C) HOT WIRE ANEMOMETER

D) PITOT TUBE ANSWER:D WORKING PRINCIPLE OF DEAD WEIGHT PRESSURE GAUGE TESTER IS BASED ON A) PASCAL'S LAW B) DALTON'S LAW OF PARTIAL PRESSURE C) NEWTON'S LAW OF VISCOSITY D) AVOGADRO'S HYPOTHESIS ANSWER:A WHICH OF THE FOLLOWING INSTRUMENT CAN BE USED FOR MEASURING SPEED OF AN AEROPLA NE? A) VENTURIMETER B) ORIFICE PLATE C) PITOT TUBE D) ROTAMETER ANSWER:C DENSITY OF WATER IS MAXIMUM AT A) 0° C B) 0° K C) 4° C D) 100° C ANSWER:C THE SHEAR STRESS-STRAIN GRAPH FOR A NEWTONIAN FLUID IS A A) STRAIGHT LINE B) PARABOLIC CURVE C) HYPERBOLIC CURVE D) ELLIPTICAL ANSWER:A PROPERTY OF A FLUID BY WHICH MOLECULES OF DIFFERENT KINDS OF FLUIDS ARE ATTRACTED TO EACH OTHER IS CALLED A) ADHESION B) COHESION C) VISCOSITY D) COMPRESSIBILITY ANSWER:A THE SPECIFIC WEIGHT OF SEA WATER IS __________ THAT OF PURE WATER. A) SAME AS B) LESS THAN C) MORE THAN D) NONE OF THESE ANSWER:C THE FORCE ANALYSIS ON A CURVED VANE IS UNDERSTOOD USING______ A) VELOCITY TRIANGLES B) ANGLE OF THE PLATE C) VANE ANGLES D) PLATE DIMENSIONS

ANSWER:A...