Engineering/Mechanical Engineering Basic Mcq Questions Set 1 Sample Test,Sample questions

Question:
 A sine bar cannot be used without

1.Angle gauge

2.Vernier calliper

3.Slip gauge

4.Micrometer

Posted Date:-2022-03-04 01:47:35


Question:
 At half load the steam, consumption in the throttle governed engine is 'S1' and in a cut off governed engine it is 'S2' under similar condition

1. S2>S1

2.S2=S1

3.S2=S1/4

4.S2

Posted Date:-2022-03-04 01:58:16


Question:
 For machining the flange of a 90 elbow on a lathe, the following holding device is used.

1.Lathe dog

2.Catch plate

3. Angle plate

4.Face plate

Posted Date:-2022-03-04 01:45:44


Question:
 In a flange coupling, the flange bolts are designed for

1. fatigue

2. shear forces

3. compression

4. tensile forces

Posted Date:-2022-03-04 01:26:28


Question:
 In a mechanical refrigeration system, the highest temperature of refrigerant occurs

1.Between condenser and evaporater

2.In evaporator

3.Before expansion value

4.Between compressor and condenser

Posted Date:-2022-03-04 01:53:56


Question:
 In a process chart the inverted triangle symbol indicates

1.an operation

2. inspection

3.storage

4.transport

Posted Date:-2022-03-04 00:44:55


Question:
 In a simple spur gear train, gears with 24, 48, 32, 72 and 96 teeth are in sequence. The gear with 24 teeth runs at 900 rpm. The speed in rpm of gear with 72 teeth is

1.450

2.225

3.2700

4.300

Posted Date:-2022-03-04 01:35:08


Question:
 In upcut milling the work piece is fed

1. at angle of 60 deg to the cutter

2.against the rotating cutter

3.at the right angle to the cutter

4.in the direction of the cutter

Posted Date:-2022-03-04 01:10:56


Question:
 In vapour absorption refrigeration machine fluids used are

1.freon and lithium bromide

2.water and ammonia

3.brine and sulphur dioxide

4.air and water

Posted Date:-2022-03-04 01:36:40


Question:
 Kerosene is used as coolant, while machining

1. mild steel

2.cast iron

3.stainless stee

4.aluminium

Posted Date:-2022-03-04 03:02:56


Question:
 Pipes subjected to high pressures are generally made by

1. slush casting

2.pressure casting

3.extrusion

4.centrifugal casting

Posted Date:-2022-03-04 01:39:22


Question:
 Rapping allowance is provided on a pattern to take care of

1.shrinkage

2.distortion

3.machining

4.easy withdrawl

Posted Date:-2022-03-04 01:07:19


Question:
 The compression ratio of a petrol engine is approximately

1.3:1

2.7: 1

3.18:1

4.25:1

Posted Date:-2022-03-04 02:18:36


Question:
 The purpose of tumbler gears in lathe is to

1. Cut gears

2.Cut threads

3.Reduce spindle speeds

4.Give desired direction of movement to the lathe carriage

Posted Date:-2022-03-04 01:44:42


Question:
1.25 kg of hydrogen are burnt with stiochiometric air, the mass of air in kg required is (choose the nearest value)

1.10.0

2.21.6

3.435

4.48.6

Posted Date:-2022-03-04 01:33:20


Question:
A belt can transmit maximum power when the total tension of the drive is

1.equal to the centrifugal tension

2. twice the centrifugal tension

3. three times the centrifugal tension

4.four times the centrifugal tension

Posted Date:-2022-03-04 02:47:48


Question:
A cotter joint is generally used to transmit

1. torque

2.shear forces

3.tensile forces

4.bending forces

Posted Date:-2022-03-04 01:29:05


Question:
A feather key is on one the following types

1.sunk

2.tapered

3.parallel

4.tangent

Posted Date:-2022-03-04 01:29:40


Question:
a governer in an Ic engine controls the

1.mean speed variation

2.cyclic speed variation

3.load fluctuations

4.exhaust gas temperature

Posted Date:-2022-03-04 01:34:32


Question:
A lift descends with an acceleration of 0.5 metres/sec^2 from the top floor of a multistoried building. The time required to travel a distance of 25 metres will be

1. 5 sec

2.8 sec

3.10 sec

4.12 sec

Posted Date:-2022-03-04 02:10:44


Question:
A low wet bulb temperature indicates

1.cool air

2.cool air with high specific humidity

3.cool air with high enthalpy

4. cool air with low specific humidity

Posted Date:-2022-03-04 01:32:38


Question:
A mass of 40 kg is about to slide down when placed on a plane inclined at 30 degree to horizontal. The coefficient of friction between the plane and the mass is

1.3/2

2.2/3

3.1/3

4.4/3

Posted Date:-2022-03-04 01:20:03


Question:
A micrometer screw has pitch of 0.5 mm and the themble has 100 equal divisions marked on it, the least count of the instrument in mm is
. 

1.0.05

2.0.5

3. 0.025

4.0.005

Posted Date:-2022-03-04 00:36:32


Question:
A process in which no heat is supplied or rejected and entropy is constant is known as

1. adiabatic process

2.isentroic process

3. polytropic process

4.isothermal process

Posted Date:-2022-03-04 02:53:20


Question:
A simply supported beam has a uniformly distributed load on it, the bending moment diagram is

1.triangle

2.parabola

3.semicircle

4.rectangle

Posted Date:-2022-03-04 01:18:23


Question:
A stone of mass 1 kg tied to a string of 1 metre long is rotated in a horizontal circle at a constant angular speed of 5 rad/sec, then the tension in the string will be

1.5N

2.10N

3.15N

4.25N

Posted Date:-2022-03-04 02:11:31


Question:
Air fule ratio in a jet engine is

1.10:1

2.40:1

3.60:1

4.90:1

Posted Date:-2022-03-04 02:42:27


Question:
Air refrigeration cycle works on the

1.Brayton cycle

2.Bell Coleman cycle

3.Carnot cycle

4.Sterling cycle

Posted Date:-2022-03-04 01:30:42


Question:
Babbitt metal is an alloy of

1. tin, copper, antimony and lead

2.copper, zinc and tin

3.iron and tungsten

4.tin, copper, lead and phosphorous

Posted Date:-2022-03-04 01:21:19


Question:
Bore and stroke of a double acting steam engine cylinder are 30 cms and 50 cms respectively. If the IHP on crank end is 1% less than IHP on cover end, the diameter of piston rod is

1.1 cm

2.2 cm

3.3 cm

4.2.5 cm

Posted Date:-2022-03-04 03:04:24


Question:
Brasses and bronzes are welded using

1.neutral flame

2.oxidizing flames

3. carburising

4.reducing flame

Posted Date:-2022-03-04 00:46:47


Question:
Centrifugal tension in belt

1.Reduce power transmission

2.Increase power transmission

3.Does not effect power transmission

4.The effect is not definite

Posted Date:-2022-03-04 02:01:20


Question:
Centrifugal tension in belts results in

1. increased power transmission

2.reduced power transmission

3. increased belt velocity

4.same power transmission

Posted Date:-2022-03-04 01:23:34


Question:
Cobalt is added to high speed steel (H.S.S.) to

1.increase ductility

2.increase wear resistance

3.increases hot hardness

4.increase fatigue

Posted Date:-2022-03-04 01:38:38


Question:
Curtis turbine is a

1. pressure-compounded turbine

2.velocity-compounded turbine

3.pressure-velocity compounded turbine

4.reaction turbine

Posted Date:-2022-03-04 02:46:39


Question:
Draft on a pattern is provided for

1.facilitating pattern making

2.easy lifting of the casting

3. facilitating withdrawal of the pattern from the mould

4.providing for strinkage of the casting

Posted Date:-2022-03-04 01:16:05


Question:
During cold working, metals are worked

1.below their recrystalization temperature

2. below room temperature

3. below their melting point

4. below 200 degree celcius

Posted Date:-2022-03-04 01:37:52


Question:
Feed in a lathe is expressed in

1.mm per revolution

2.mm per degree

3.mm

4.rpm

Posted Date:-2022-03-04 01:08:47


Question:
Feeler gauges are used for measuring the

1.thickness of plates

2. clearances between mating parts

3. pitch of screw threads

4.radius of curvature

Posted Date:-2022-03-04 00:37:45


Question:
For a spring controlled governer the relation F = ar+b (F is the controlling force, r is the radius of rotation a and b are constants), indicates that the governer is

1.unstable

2.stable

3.insochronous

4.satisfactory

Posted Date:-2022-03-04 01:33:49


Question:
For cooling the pistons of diesel engine common fluid used is

1.air

2.water

3.fuel oil

4.lubricating oil

Posted Date:-2022-03-04 02:14:56


Question:
For gas turbines, the compressors used are

1.Reciprocating type

2.Centrifugal type

3.Axial flow type

4.Sliding value type

Posted Date:-2022-03-04 01:57:10


Question:
For the steam which is initially saturated andflowing through a nozzle, the ratio of pressures at exit and inlet for maximum discharge is equal to

1.0.545

2.0.582

3.0.5

4.0.6

Posted Date:-2022-03-04 02:12:29


Question:
Gnatt chart is used for

1. efficient machine utilisation

2.production scheduling

3. manpower utilisation

4.routing

Posted Date:-2022-03-04 01:40:12


Question:
If the acceleration due to gravity is doubled at any place, the weight of the body will be

1.half

2.double

3.same

4.2g times

Posted Date:-2022-03-04 02:08:35


Question:
In a carnot engine with an efficiency of 40%, the heat rejected to the sink at 27 C is 60 kJ, then the heat supplied in kJ to the engine by the sources is

1.24

2.56

3.100

4.50

Posted Date:-2022-03-04 01:35:58


Question:
In a lifting machine, a load of 240 N is being raised and the velocity ratio is 20. If the efficiency of the machine is 40%, the effort is equal to

1.20N

2.25N

3.30N

4.35N

Posted Date:-2022-03-04 02:03:30


Question:
In a typical lathe machining, discontinuous chips are formed when machining

1. carbon steel

2.copper

3.steel at high speed

4.mild steel

Posted Date:-2022-03-04 01:41:00


Question:
In Industry of the developed nations the type of production most often occurring is

1.Mass production

2.Batch production

3.Single lot production

4.Create lot production

Posted Date:-2022-03-04 01:17:45


Question:
In power transmission using open belts or horizontal shafts it is preferable to have the slack side of the belt on the top because

1.the belt length is smaller

2.the slip is more

3. the angle of contact is more

4.it is safe

Posted Date:-2022-03-04 01:24:21


Question:
In V-belts the contact between the pulley and the belt is at the

1.Bottom only

2.Both side and bottom

3.Top and bottom

4.Sides only

Posted Date:-2022-03-04 01:59:15


Question:
In vapour compression refrigeration system, compressor is used because

1. It increases cooling effect of cycle

2. It makes possible, to remove heat from refrigerant at atmospheric pressure

3.It increases the coefficient of performance of the system

4. It removes thermal properties of refrigerant

Posted Date:-2022-03-04 01:56:19


Question:
Mandrels are used to hold

1.cutting tools

2.hollow work pieces

3.face plate

4.drill bits

Posted Date:-2022-03-04 01:12:33


Question:
Newton is a unit of

1.Mass

2.Momentum

3.Force

4.Energy

Posted Date:-2022-03-04 02:43:43


Question:
One of the following materials is comonly used for bearings

1.steel

2.gun metal

3.zinc

4.aluminium

Posted Date:-2022-03-04 01:22:36


Question:
One of the following objectives is not achieved by the process of annealing

1.to relieve internal stress

2.to refine grain structure

3. to increase the yield point

4.to soften the metal

Posted Date:-2022-03-04 00:35:31


Question:
One of the materials used for making surface plate is

1.granite

2.brass

3.stainless steel

4.wood

Posted Date:-2022-03-04 01:03:14


Question:
Permeability, in relation to moulding sands, is high for

1.coarse grains

2.fine grains

3.round grains

4.medium grains

Posted Date:-2022-03-04 01:43:11


Question:
Quick return motion is used in a

1.lathe

2.drilling

3.shaper

4.grinder

Posted Date:-2022-03-04 01:16:46


Question:
Reducing flame is obtained in oxyactetylane welding with

1.excess oxygen

2. equal parts of both gases

3.excess of acetylene

4. reduced acetylene

Posted Date:-2022-03-04 00:58:56


Question:
Sprue is the passing provided for the

1.outflow

2.smooth flow

3.inflow

4.solidification of the molten material

Posted Date:-2022-03-04 01:09:48


Question:
The centrifugal tension in belts

1. increase power transmission

2.decrease power transmission

3.doubles the power transmission

4.does not affect the power transmission in any way

Posted Date:-2022-03-04 02:55:20


Question:
The coefficient of Performance for a refrigerator will be

1.0.001

2.0.10

3.1.00

4.above 1.0

Posted Date:-2022-03-04 02:09:33


Question:
The dimensional formula MLT^2 represents

1.velocity

2.acceleration

3.momentum

4.force

Posted Date:-2022-03-04 02:17:38


Question:
The function of a carburettor is to supply

1. air and diesel

2.air only

3.air and petrol

4.petrol

Posted Date:-2022-03-04 02:16:31


Question:
The moisture in air will condense at

1.wet bulb temperature

2.low point temperature

3.saturaion temperature

4.dry bulb temperature

Posted Date:-2022-03-04 01:31:35


Question:
The operation of enlarging of a hole is called

1.drilling

2.reaming

3.boring

4.counter sinking

Posted Date:-2022-03-04 01:11:30


Question:
The part which provides simple harmonic to the D-slide valce of a steam engine is called

1.eccentric rod

2.valve rod

3.piston rod

4.fly wheel

Posted Date:-2022-03-04 02:39:52


Question:
The pump with a low initial cost and low maintenance cost is

1.gear pump

2.bucket pump

3.double acting piston pump

4.centrifugal pump

Posted Date:-2022-03-04 01:13:28


Question:
The refrigerant used in vapour absorption refrigeration
 

1.Freon-12

2.ammonia

3.O2

4.Aqua-ammonia

Posted Date:-2022-03-04 02:38:47


Question:
The screw thread commonly used for transmission of motion is one of the following types of threads

1.acme

2.vee

3.knuckle

4. British Association

Posted Date:-2022-03-04 01:27:27


Question:
The tool life is affected to the maximum extent by

1.the cutting speed

2.the feed

3. the depth of cut

4.the size of the tool

Posted Date:-2022-03-04 02:57:35


Question:
The unit of energy is S.I. system is

1.Newton

2.Pascal

3.Joule

4.Watt

Posted Date:-2022-03-04 02:04:32


Question:
To produce a spark across the gap of a spark plug, the voltage used is

1.1000 to 2000 volts

2.2000 to 4000 volts

3.4000 to 6000 volts

4.6000 to 10000 volts

Posted Date:-2022-03-04 02:13:51


Question:
Two forces of magnitude 30 N and 40 N act at right angles at a point, the magnitude of the resultant force is

1.50N

2.10N

3.70N

4.35N

Posted Date:-2022-03-04 01:19:21


Question:
Two masses of 10 gm and 4 gm are moving with equal kinetic energy. The ratio of their linear momentum is

1.1:2

2. 3:1

3.4:1

4.1:16

Posted Date:-2022-03-04 02:02:14


Question:
Upsetting is the term used in one of the following operations

1.casting

2.turning

3.drilling

4.forging

Posted Date:-2022-03-04 01:05:36


Question:
Which of the following operations cannot be performed on a lathe

1.facing

2.drilling

3. thread cutting

4.slotting

Posted Date:-2022-03-04 01:14:07


Question:
Which one of the following is not part of combination set?

1.Try square

2.Scale

3. Bevel Protractor

4.Dial guage

Posted Date:-2022-03-04 01:46:31


Question:
Which one of the following is spring loaded type
A. B.C.D. 

1.Watt governor

2. Hartnel governor

3. Porter governor

4.Propel governor

Posted Date:-2022-03-04 02:40:55


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