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You Are On Multi Choice Question Bank SET 2686
134301. A device used for lifting or lowering objects suspended from a hook at the end of retractable chains or cables is called:
(A): Hoist (B): Job crane (C): Portable elevator (D): Chain conveyor
134302. Bin cards are used in keeping record of:
(A): Man power (B): Machine utilization (C): Material storage (D): Entry/exit time of workers
134303. Simple harmonic motion
(A): Is another name for periodic motion (B): Is the motion of a point in a circle (C): Is a projection of the circular motion of a particle (D): Is a projection of the circular motion of a particle at constant speed on a diameter of the circle
134304. Routing decides
(A): Sequence in which order/work will be taken up (B): Sequence of operations to be followed (C): How the machines can be properly loaded (D): The stock control system
134305. The moment of inertia of an area is always least with respect to:
(A): Centroidal axis (B): Vertical axis (C): Radius of gyration (D): Depends upon configuration of the area
134306. All of the following statements are correct,except
(A): An event is a function of two or more activities (B): An Activity of the project is represented by a circle (C): Slack may be positive,zero or negative (D): CPM technique is useful to minimize the direct and indirect expenses
134307. The standard length in a sine bar is measured:
(A): Between the centres of two rollers (B): Between inner circumference of two rollers (C): Between outer circumference of two rollers (D): From edge to edge
134308. One atmospheric pressure is not equivalent to:
(A): 1.013 kgf/cm2 (B): 104N/m2 (C): 760 mm of Hg (D): 10.33 m of water column
134309. A pitot-static tube measures:
(A): Undisturbed fluid pressure (B): Dynamic pressure of a moving stream (C): Pressure difference between two fluids (D): Difference between the dynamic and static pressure
134310. Which one of the following is not a part of micrometer?
(A): Spindle (B): Anvil (C): Beam (D): Sleeve
134311. Solar energy can be directly used in:
(A): Air refrigeration system (B): Jet refrigeration system (C): Vapour compression refrigeration system (D): Vapour absorption refrigeration system
134312. Choose the false statement
(A): Thermal conductivity is always higher in the purest form of metal (B): Heat treatment causes considerable variation in the thermal conductivity (C): Thermal conductivity of adamp material is considerably higher than the thermal conductivity of the dry material and water taken individually (D): Thermal conductivity decreases with increase in the density of the substance
134313. Fins are usually provided to a heat exchanger surface in order to augment heat transfer by increasing the
(A): Heat transfer coefficient (B): Surface area (C): Turbulence level (D): Temperature difference
134314. Transient conduction means:
(A): Very little heat transfer (B): Heat transfer for a short time (C): Heat transfer with a very small temperature difference (D): Conduction when the temperature at a point varies with time
134315. Isothermal efficiency of a compressor is defined as the ratio of
(A): Volume of free air delivered per stroke to the swept volume of the piston (B): Indicated power to shaft power of the motor of engine required to drive the compressor (C): Adiabatic power to the power required to drive the compressor (D): Isothermal work to the actual work required to compress the air for the same pressure ratio
134316. Suggest the device commonly preferred for supercharging I.Engines
(A): Piston compressor (B): Roots blowers (C): Axial flow compressor (D): Sliding vane type compressor
134317. Critical pressure for steam is
(A): 185.85 kgf/cm2 (B): 212.55 kgf/cm2 (C): 225.65 kgf/cm2 (D): 245.55 kgf/cm2
134318. Vapour is a
(A): Pure substance (B): Perfect gas (C): Mixed phase of liquid and gas (D): Substance homogeneous and invariable in chemical composition
134319. Which of the following statements is not true with respect to Mbllier-diagram?
(A): The inclination of constant pressure lines equals the absolute temperature (B): The constant pressure lines bend slightly downward in the super heated region (C): The expansion process through a turbine is represented by a vertical line parallel to the ordinate (D): The diagram helps to readily find out the total heat content of a steam of specified pressure and quality
134320. During---------a solid changes directly to the gaseous form without ever being a liquid
(A): Condensation (B): Evaporation (C): Sublimation (D): Crystallisation
134321. Highest useful compression ratio is the compression ratio at which the engine
(A): Gives maximum power output (B): Can operate without detonation (C): Consumes minimum fuel of a particular power output (D): Maintains operating pressures and temperatures within prescribed limits
134322. Scavenging air means:
(A): Air sent under compression (B): Air used for forcing the burnt gases out of the cylinder during the exhaust period (C): Forced air for cooling the engine cylinder (D): Burnt air containing combustion products
134323. Which pair of gears usually has high friction lossess?
(A): Spur gears (B): Bevel gears (C): Helical gears (D): Worm and worm wheels
134324. Which is not the effect of detonation?
(A): High operating temperature (B): Loss in efficiency and power output (C): Loud and pulsating noise (D): High local stresses
134325. A thermodynamic system refers to:
(A): Any defined region in space (B): A specified mass in fluid flow (C): A specified region of constant volume (D): A prescribed and identifiable quantity of matter
134326. Identify the wrong statement:
(A): The laws of thermodynamics cannot be derived mathematically (B): The quantity of matter constituting a system remains constant (C): The kinetic and potential energies possessed by a system can be converted into heat (D): The system and its surroundings taken together constitute an isolated system
134327. Capillary action is due to:
(A): Adhesion of liquid particles to a surface (B): Cohesion of liquid particles (C): Cohesion and adhesion (D): Surface tension
134328. Bernoulli’s equation is applicable between any two points in:
(A): Rotational flow of an incompressible fluid (B): Irrotational flow of compressible or incompressible fluid (C): Steady rotational flow of an incompressible fluid (D): Steady,Irrotational flow of an incompressible fluid
134329. A Pelton wheel is ideally suited for:
(A): High head and low discharge (B): High head and high discharge (C): Low head and low discharge (D): Medium head and medium discharge
134330. With compression of closed coiled helical spring,the wire gets subjected to:
(A): Tension (B): Compression (C): Shear (D): A combination of shear and tension
134331. Size of the gear is generally specified by:
(A): Pitch circle diameter (B): Working depth (C): Module (D): Tooth thickness
134332. Which is closest to the purest form of iron?
(A): Cast iron (B): Wrought iron (C): Grey iron (D): Mild steel
134333. A universal joint is an example of:
(A): Lower pair (B): Higher pair (C): Rolling pair (D): Sliding pair
134334. Bulk modulus is measured in terms of:
(A): N/m (B): N/m2 (C): Nm/s (D): Ns/m2
134335. Percentage elongation during tensile test is indicative of:
(A): Creep (B): Malleability (C): Ductility (D): Elasticity of the metal
134336. The charpy test is conducted to measure:
(A): Toughness (B): Creep strength (C): Fatigue strength (D): Elastic strength of a material
134337. A twist drill is a:
(A): Front cutting tool (B): Side cutting tool (C): End cutting tool (D): Front and side cutting tool
134338. Large and heavy castings are made by:
(A): Green sand moulding (B): Dry sand moulding (C): Pressure moulding (D): Machine moulding
134339. Which of the following is not a casting defect?
(A): Hot tear (B): Blow hole (C): Scab (D): Decarburization
134340. Grey cast iron is best welded by:
(A): TIG (B): Arc welding (C): Oxy-acetylene welding (D): Submerged arc welding
134341. Value of coefficient of friction in hot forming is:
(A): 0.4 (B): 0.5 (C): 0.6 (D): 0.7
134342. Slag inclusion in casting is a:
(A): Surface defects (B): Internal defect (C): Crack (D): Notch
134343. Wax pattern is used in:
(A): Die casting (B): Shell moulding (C): Investment casting (D): Plaster boards
134344. In drawing operation,the metal flows due to:
(A): Ductility (B): Work hardening (C): Plasticity (D): Shearing
134345. In compound dies:
(A): Two or more cutting operations can be performed simultaneously (B): Cutting and formation operations are combined and carried out in single operation (C): Work piece moves from one station to other with separate operation performed at each section (D): All of the above
134346. The usual ratio of forward and return stroke in shaper is:
(A): 0.084027777777778 (B): 0.043055555555556 (C): 0.085416666666667 (D): 3:2
134347. Chip breakers are provided on cutting tools:
(A): For safety of operator (B): To minimize heat generation (C): Permit short segmented chips (D): Increase tool life
134348. The power factor of a purely inductive circuit is:
(A): Lagging (B): Leading (C): Zero (D): Unity
134349. When the supply voltage for an induction motor is reduced,which of the following will increase?
(A): Full load current (B): Percentage of slip (C): Maximu temperature rise on full load (D): All of the above
134350. Transformer ratings are usually expressed in terms of:
(A): kWh (B): kVA (C): volts (D): kW
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