Download Solved Exam. Paper J.E.Mechanical 2018
This is the paper of J.E.Mechanical.This exam. paper held on october 2018.In this exam. paper total 170 questions asked which are in 85 marks.
Download Screening Test JE Mechanical 2018
Ques:- The co-efficient of friction is the
Ans:- Ratio of limiting friction and normal reaction
Ques:- If the arm of couple is doubled, them moment of that couple would
Ans:- Be doubled
Ques:- When trying to turn a key into the lock, which of the following is applied ?
Ques:- A body weighing 200 N is placed on a rough horizontal plane. If the value of co-efficient of friction is 0.6 then the normal reaction will be
Ans:- 200 N
Ques;- Thermoplastic materials are those materials which
Ans:- Do not become hard with the application of heat and pressure and result in permanently hard product
Ques:- The maximum stress induced due to suddenly applied is………………the stress induced when the same load is applied gradually.
Ques:- The factor of safety depends Upon
Ans;- Nature of loading, frequency of variation of load, Degree of reliability required.
Ques:- The force is completely defined when we specify its
Ans:- Magnitude, Direction, Point of application
Ques;- Dynamic friction as compared to static friction is
Ques:- The setting of tools in advance at a far from the machine tool or off-line in special holders is known as
Ans:- Pre-set tools
Ques:- CAPP in CNC Machines Automation stand for
Ans:- Computer Aided Part programming
Ques:- A Nozzle is said to divergent nozzle
Ans:- When the cross-section of the nozzle increases continuously from entrance to exit
Ques:- The objective of caulking in a riveted joint is to make the joint
Ans:- Leak proof
Ques:- The centre to centre distance between two consecutive rivets in a row is called
Ques:- The transverse fillet weld is design for
Ans:- Tensile strength
Ques:- A cotter is used to transmit
Ans:- Axial tensile and compressive loads
Ques:- The bending moment at the free end of a cantilever beam is
Ques:- When the shear force diagram is parabolic curve between two points it indicates that there is a
Ans:- uniformly varying load between the two points.
Ques:- The maximum production of small and slender parts is done by
Ans:- Multispindle automatic lathe
Ques:- Buckling load for a given column depends upon
Ans:- Area of cross-section of the column, Length and radius of gyration of the column, modulus of elasticity for the material of the coilumn
Ques:- A column that failure due to direct stress is called
Ans:- short column
Ques:- The Rankine’s constant fpr mild steel column with both ends hinged is
Ques:- Which of the following is case hardening process ?
Ques;- The main task of battery in automobile is to
Ans:- Supply a large amount of power to turn the starter motor when the engine is being started
Ques:- In the psychometric chart specific humidity (moisture content) lines are
Ans:- Horizontal and uniformly spaced
Ques:- Mechanical efficiency of a centrifugal pump is the ratio of
Ans:- Energy available at the impeller to the energy supplied to the pump by the prime mover
Ques:- The flow in a pipe or channel is said to be uniform when
Ans:- The liquid particles at all sections have the same velocities
Ques:-Head developed by the centrifugal pump is
Ans:- Proportional to speed of impeller
Ques:- The shell of Cochran boiler is made hemispherical
Ans:- To give maximum space and strength, To withstand the pressure of steam inside the boiler
Ques:- Lancashire boiler is
Ans:- Stationary fire tube boiler, Internally fire tube boiler, horizontal boiler.
Ques:- Locomotive boiler is
Ans:- multi tubular, horizontal, internally fired mobile boiler.
Ques:- A Nozzle is said to convergent nozzle
Ans:- when the cross-section of the nozzle decreases continuously from entrance to exit
Ques:- The purpose of governing in the steam turbine is to
Ans:- Maintain the speed of the turbine
Ques:- The effect of bleeding is that
Ans:- it increases the thermodynamic efficiency of the turbine, boiler is supplied with hot water, it decreases the power development by the turbine
Ques:- The brown smoke during the operation of a Bessemer converter indicates that the
Ans:- Air is burning out silicon and manganese
Ques:- A leaf spring in automobile is used
Ans:- To absorb shock
Ques:- Deep groove ball bearings are used for
Ans:- combined thrust and radial loads at high speeds
Ques:-In basic Bessemer, the furnace is lined with
Ans:- a mixture of tar and burnt dolomite bricks
Ques:- The chart which gives an estimate about the amount of material handling between various work station is known as
Ans:- travel chart
Ques:- Which of the following is the principles of material handling ?
Ans:- Keep all handling minimum, Select only efficient handling equipment, move the heaviest weight to the least distance
Ans:- Determines the programme for the operations.
Ques:- In manufacturing management the term “dispatching” is used to describe
Ans:- Dispatch of the work orders through shop floor
Ques:- Value analysis is particular of interest when
Ans:- Production is large.
Ques:- Which of the following chart gives simultaneously information about the progress of the work and machine loading ?
Ans:- Man-Machine chart
Ques:- Hydraulic ram is device used to
Ans:- to lift small quantity of water to a greater height when a large quantity of water is available at smaller height.
Ques:- According to the law of moments, if a number of coplanar forces acting on a particle are in equilibrium then
Ans:- The alegebraic sum of their moments about any point in their plane is zero
Ques:- Blow-off cock in boiler is used to
Ans:- Empty the boiler when required and discharge the mud, scale or sediments which are accumulated at the bottom of the boiler
Ques:- A bolt of size M24 MULTIPLY 2 means that
Ans:- The nominal diameter of the bolt is 24 mm and pitch is 2 mm
Ques:- The principle of transmissibility of the forces states that, when a force acts upon a body, its effects is
Ans:- Minimum, if acts at the center of grtavity of the body
Ques:- In an inward reaction flow turbine
Ans:- The water enters the wheel at the outer periphery and then flows towards the center of the wheel
Ques:- For the same maximum pressure and temperature,
Ans:- Diesel cycle is more efficient than Otto Cycle
Ques:- The compression ratio is the ratio of
Ans:- Total volume to clearance volume
Ques:- The resultant of two forces P and Q such as P >Q acting along the same straight line, but in opposite direction is given by
Ques:- Hard steering may be due to
Ans:- Tyre pressure too low, Steering gear adjusted too tightly, Incorrect wheel alignment
Ques:- Co-efficient of friction depends upon
Ques:- Nature of surface only
Ques:- The acetylene cylinder is usually painted with
Ans:- Maroon colour
Ques:- Which of the following property is desirable for material used in tools and machines ?
Ques:- The process in which hydrocarbons are decomposed into smaller hydrocarbons is called
Ques:- The gas used in modern shock absorbers is
Ques:- Coolant pumps are of
Ans:- Centrifugal type
Ques:- The radiator tubes are manufactured by using
Ans:- Brass tubes
Ques:- Engine torque is highest at
Ans:- Intermediate speed
Ques:- The most commonly used material for tyre tubes is
Ques:- Which of the following can be done to reduce the cold corrosion of main Engine cylinder liners using high sulphur fuel oil ?
Ans:- Using high TBN cylinder oil
Ques:- Copper tubing is used in refrigerant system because
Ans:- It has less internal resistance
Ques:- The machinery which is usually tested first once the ship reaches a dry dock is
Ans:- Engine room crane
Ques:- Which of the following instruments is used to measure rudder carrier bearing wear down ?
Ques:- During flooding of a dry dock which of the following items must be verified ?
Ans:- All sea valves are operational., All overboard discharge valves are operational., Stern tube seal are operational.
Ques:- Cladding is the process used for
Ans:- Protection of metal surfaces against corrosion.
Ques:- Weather radar operates in which bands of radar frequencies ?
Ans:- C and X-band
Ques:- The design aspect ratio for a conventional airplane is a compromise between
Ans:- Aerodynamics and structures
Ques:- The wings of an airplane are designed to provide
Ques:- The angle between north and the flight path of the aircraft is the
Ques:- Which one among the following is most widely accepted as the homeland of Indo-Aryans ?
Ans:- Central Asia
Ques:- The whole area of Harappan culture represents a
Ans:- Triangular area
Ques:- Shravasti was the capital of
Ques:- Which ruler built the famous rock-cut temple of Shiva at Ellora ?
Ans:- Krishna 1
Ques:- Which of the following Sultans wrote his autobiography ?
Ans:- Firoz Tughlaq.
Ques:- Who is considered the second founder of the Maratha state ?
Ans:- Baji Rao
Ques:- What was the symbol of the Swedeshi movement ?
Ques:- Who made the ‘Deepavali Declaration’ and when ?
Ans:- Lord Irwin in 1929
Ques:- Loess is an example of
Ans:- Aeolian rocks
Ques:- Which of the following seismic waves effect only the surface of the earth ?
Ans:- Surface waves
Ques:- Which of the following regions receives maximum rainfall in winters ?
Ans:- Mediterranean regions
Ques:- The period of the farthest distance between the moon and the earth is called
Ques:- Those animals which derive their food exclusively from plants are called
Ques:- The homeland of Kirghiz tribe is
Ans:- Central Asia
Ques:- Which type of crops are mainly grown in shifting cultivation ?
Ans:- Food crops
Ques:- The Nag Tiba is the mountain range of the
Ans:- Lesser Himalaya
Ques:- Which river divides the Deccan Tableland from northern India ?
Ques:- Which of the following areas is not affected by the monsoon of the Arabian Sea Branch ?
Ans:- The Punjab Plain
Ques:- Which of the following types of soils is most suitable for tea cultivation ?
Ans:- Alluvation soils
Ques:- Which of the following states is a leading producer of woollen textiles ?”
Ques:- Which provision of the fundamental rights is directly related to the exploitation against children ?
Ans:- Article 32
Ques:- The authority to specify as to which castes shall be deemed to be Scheduled Castes rests with which of the following ?
Ans:- The President
Ques:- Which amendment of the Indian constitution restricts the size of the union Ministry ?
Ans:- 91st Amendment
Ques:- Comptroller and Auditor-General of India is appointed by
Ans:- The President
Ques:- Which one of the following bills must be passed by each House of the Indian Parliament separately by special majority ?
Ans:- Constitutional Amendment Bill
Ques:- The disputes regarding the election of the president and vice president of India are decided by the
Ans:- Supreme Court
Ques:-“NABARD” was established in which five year plan?
Ques:- National Renewal Fund was constituted for the purpuse of
Ans:-Restructuring and modernization of industries
Ques:- Who formulates the monetary policy in India ?
Ques:-Which of the following is not a source of tax revenue collected by the Government of India ?
Ans:- Dividends and Profits
Ques:- The gaseous fuel which does not contain carbon dioxide is
Ans:- Natural gas
Ques:-The glouse level in the blood is controlled by
Ans :- Insulin
Ques:- The organ affected by diptheria is
Ans:- None of these
Ques:-Pain relieving drugs are known as
Ques:- Pointing towards a lady in a photograph Vimalsaid,”she is the daughter of my grandfather’s only son.” How is Vimal related to her?
Ques:- Sudha’s number is 11th from downward ina class of 31 students.What willbe her number from upwards
Ques:- The largest natural lake of H.P. is
Ques:- The famous Mohan Park is located at
Ans:- None of these
Ques:- Who was the Raja of Bilaspur in 1682, when Guru Govind Singh visited the territory ?
Ans:- Bhim chand
Ques:- Which district in H.P. is famous for fraternal polyandry ?
Ques:- Which of the following is the India’s first underwater robotic drone ?
Ans:- Eye ROV TUNA
Ques:- Which of the following technology initiatives has recently launched by the Union Government for coffee growers ?
Ans:- Coffee Connect
Ques:- Indian men’s hockey team defeated which country to win bronze at the 2018 Jakarta Asian Games ?
Ques:- Which State government has decided to provide free mobile phones to women of BPL families ?
Ques:- You must get rid…………..unnecessary things.
Ques:- Antonym of the word ‘Robust’ is
Ques:- Meaning of the idiom ‘To draw the long bow’ is
Ans:- To exaggerate
Ques:- The initial tension (in newton) in a bolt used for making a fluid tight joint like steam engine cover joints is calculated by which of the following relation in which ‘d’ is the nominal diameter of bolts in mm
Ans:- 2840 d
Ques:- Welding takes place by
Ans:- Coalescence between the parts to be joined.
Ques:- The core diameter of the thread is equal to which of the following in which ‘d’ is the diameter of the bolt ?
Ques:- Square thread is usally found on
Ans:-feed mechanism of a machine tools
Ques:-The units of modulus of elasticity is same as those of
Ans:- stress, pressure and modulus of rigidity
Ques:-The shearforce of a cantilever beam of length ‘/’ carrying a uniformly distributed laoad of wper
Ques:- The hoop stress in a thin cylindrical shell is
Ans:- cirumferential tensile stress
Ques:- The assumption made in Euler’s column theory is that
Ans:- All of these
Ques:- Euler’s column formula holds good for
Ques:- Acolumn is said to be short column ,when
Ans:- the ratio of its length to the least radius of gyration is less than 80.
Ques:- The material in which the atoms are arranged chaotically is called
Ques:- The material in which the atoms are arranged regularly in some directions but not in orders is called
Ques:-The purpose of heat treatment is to
Ans:-Any one of these
Ques:-Aperfect black body is one which
Ans:-absorbs heat radiations of all wavelengths falling on it
Ques:- Reynold number is the ratio of
Ans:-intertia force to viscous force
Ques:-The specific gravity of water is
Ques:-The by- pass factor of a cooling coil decrease with
Ans:-decrease in fin spacing and increase in number of rows
Ques:-During heating and dehunmidification process dry bulb tempreature
Ques:-The centrifugal compressors are generally used for refrigerants that require
Ans:- large displacements and low condensing pressures
Ques:-The mass per unit volume of a standard temperature and pressure is called
Ques:-The intensity of pressure at any points in a liquid is
Ans:- directly proportional to the depth of the liquid from the surface
Ques:- The Bernoulli, s equation based upon the assumption that
Ans:-There is no loss of energy of the liquid flowing, The velocity of flow is uniform across any cross-section of the pipe, No force except gravity acts on the fluid.
Ques:- Overall efficiciency of a centrifugal pump is the ratio of
Ans:- actual work done by the pump to the energy supplied to the pump by the prime mover
Ques:- The centrifugal tension in the belts
Ans:- have no effects of power transmitted
Ques:-The maximum fluctuation of energy is the
Ans:- Difference between the maximum and minimum energies.
Ques:- Watts governer can work satisfactorily at speed from
Ans:- 60 to 80 r.p.m
Ques:- In the law of machine P=mw+C
Ans:- C stands for friction
Ques:- According to Lami’s theorem
Ans:- If trhe three forces acting at a point are in equilibrium, then each force is proportional to the sine of the angle between the other two.
Ques:- The centre of gravity of a quadrantof a circle lies along its central radius at a distance of
Ans:- 0.424 R