Electrical Engineering

Q1: Special semiconductor diodes used as fast counters in electronic circuits are?
Answer: Photodiodes

Q2: Rectangular voltage is an example of?
Answer: Digital waveform

Q3: OP-AMP can amplify?
Answer: Both AC and DC

Q4: Acceptor and donor impurities provide?
Answer: p-carriers and n-carriers respectively

Q5: Circuits that implement logic operations are called?
Answer: Logic gates

Q6: In forward bias, potential barrier width?
Answer: Decreases

Q7: In half-wave rectifier, RMS value of AC component is?
Answer: More than DC value

Q8: For p-type semiconductor silicon is doped with valency?
Answer: 3

Q9: Transistor as amplifier is similar to?
Answer: Triode vacuum tube

Q10: OP-AMP comparator compares input with?
Answer: Reference voltage

Q11: Non-inverting amplifier has?
Answer: Very high input impedance

Q12: Transistor operation requires?
Answer: None of the above

Q13: n-type germanium is doped with valency?
Answer: 5

Q14: OP-AMP is?
Answer: High gain amplifier

Q15: Alternating voltage is an example of?
Answer: Analog waveform

Q16: Inverter is device for conversion of?
Answer: DC to AC

Q17: Half-wave rectification output is obtained for?
Answer: Either positive or negative half cycle

Q18: Full-wave rectification output is obtained for?
Answer: Complete cycle

Q19: In transistor symbol arrow is located on?
Answer: Emitter

Q20: Donor impurity NOT example is?
Answer: Aluminium

Q21: Forward current in diode is due to?
Answer: Majority carriers

Q22: Resistivity of insulator is about?
Answer: 10⁸ ohm meter

Q23: Completely filled band in conductor is?
Answer: Valence band

Q24: Depletion region is formed?
Answer: During manufacturing process

Q25: Half-wave rectification is obtained by?
Answer: Suppressing half cycle using diode

Q26: Collector current in PNP transistor is?
Answer: Slightly less than emitter current

Q27: n-type semiconductor contains?
Answer: Free electrons as majority carriers

Q28: LED is used as?
Answer: Indicator lamp

Q29: Device converting AC to DC is?
Answer: Rectifier

Q30: Diode works as rectifier because?
Answer: Low resistance in forward bias, high in reverse bias

Q31: Thermions are?
Answer: Electrons

Q32: Greatest energy gap material is?
Answer: Insulator

Q33: Velocity of oscillating charge is?
Answer: Changing

Q34: Minority carriers are?
Answer: Holes in n-type and electrons in p-type

Q35: In n-p-n transistor, P region is?
Answer: Base

Q36: Reverse biased p-n junction acts as?
Answer: Off switch

Q37: Si and Ge are?
Answer: Tetravalent

Q38: Electrons in p-type due to thermal generation are?
Answer: Minority carriers

Q39: Logic circuit for 1-bit addition is?
Answer: Half adder

Q40: Ordinary transistor type is?
Answer: Bipolar

Q41: Meaning of hybrid is?
Answer: Dual

Q42: Transformer induces change in?
Answer: Secondary coil

Q43: Half-wave rectifier is used to?
Answer: Run car radios

Q44: Zener diode is used as?
Answer: Voltage stabilizer

Q45: XOR gate can be built using?
Answer: AND, OR and NOT gates

Q46: Unit of resistance is?
Answer: Ohm

Q47: Transistor equation VCE = VCB + ?
Answer: VBE

Q48: Reverse bias barrier potential?
Answer: Increases

Q49: Mutual induction depends on?
Answer: Change in current

Q50: Transformer converting unbalanced to balanced signal is?
Answer: Balun

Q51: Purpose of transistor is?
Answer: Amplify or switch signals

Q52: Device acting as one-way valve is?
Answer: Diode

Q53: Fixed resistors restrict current to?
Answer: Certain level

Q54: Capacitance is ratio of charge to?
Answer: Potential difference

Q55: Ganged capacitor is combination of?
Answer: Two variable capacitors

Q56: Inductor function is to?
Answer: Oppose change in current

Q57: Increasing inductance does NOT increase?
Answer: Frequency

Q58: Active transducer is?
Answer: Thermocouple

Q59: Most widely used inductance transducer is?
Answer: LVDT

Q60: Linear temperature coefficient material is?
Answer: Platinum

Q61: Hall effect transducers are?
Answer: High resolution non-contact devices

Q62: Not useful thermistor parameter is?
Answer: Temperature constant

Q63: Asymmetric crystalline material is?
Answer: Barium titanate

Q64: P-type dopants are?
Answer: Boron, Indium, Gallium

Q65: Depletion layer is?
Answer: Region at junction

Q66: Diode is?
Answer: Unidirectional device

Q67: Zener diode voltage control level is?
Answer: Zener breakdown voltage

Q68: Zener diode application is?
Answer: Shunt regulator

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Mechanical Engineering

Q1: Which one of the following statements is not correct?
Answer: The sine of angle of repose is equal to coefficient of friction

Q2: Pick up the incorrect statement from the following?
Answer: The C.G. of a semicircle is at distance r/2 from center

Q3: Two coplanar couples having equal and opposite moments?
Answer: Cannot balance each other

Q4: Frictional force after motion starts is called?
Answer: Dynamic friction

Q5: A ladder on smooth ground and smooth wall, friction at upper end is?
Answer: Zero / none

Q6: Ratio of limiting friction to normal reaction is?
Answer: Coefficient of friction

Q7: A perfect frame contains members equal to?
Answer: 2n − 3

Q8: In method of sections, max members cut are?
Answer: Three

Q9: C.G. of triangle is at?
Answer: Concurrence of medians

Q10: Members of framed structure carry?
Answer: Compression or tension

Q11: Angle of friction is angle between?
Answer: Normal reaction and resultant of normal + limiting friction

Q12: Center of percussion condition (suspended body struck at C.P.) pressure is?
Answer: Zero

Q13: Coefficient of friction depends on?
Answer: Nature of surfaces

Q14: Resultant of given couples is?
Answer: 20 kg, negative sense

Q15: Least force to pull body on inclined plane is applied at?
Answer: Angle of friction

Q16: In virtual work method, which force is neglected?
Answer: All of the above

Q17: Dip in trolley wire problem is?
Answer: 4 cm

Q18: C.P. of solid cylinder resting on plane is?
Answer: 3r/2

Q19: C.G. of remaining part of circle problem is?
Answer: 0.5 cm

Q20: Heavy string curve with small dip is?
Answer: Parabola

Q21: Unit of M.I. (mass) is?
Answer: kg·m²

Q22: C.G. of hollow cone lies at?
Answer: h/3 from base

Q23: C.G. of solid cone lies at?
Answer: h/4 from base

Q24: Unit of M.I. (area) is?
Answer: m⁴

Q25: Center of gravity of lamina is at?
Answer: Centroid

Q26: Moment of couple =?
Answer: Force × arm

Q27: Lami’s theorem states?
Answer: Forces proportional to sine of opposite angles

Q28: D’Alembert’s principle is used for?
Answer: Converting kinetics to statics

Q29: Triangle of forces law states?
Answer: Forces in equilibrium form triangle

Q30: Vector quantity is?
Answer: Momentum

Q31: Non-coplanar concurrent forces are?
Answer: Forces meeting at point but not in same plane

Q32: Equal opposite parallel forces form?
Answer: Couple

Q33: NOT vector quantity is?
Answer: Moment (in this MCQ context)

Q34: Ladder equilibrium fails when?
Answer: Both surfaces smooth

Q35: Body in equilibrium under 3 forces condition?
Answer: Concurrent and coplanar

Q36: Principle of moments states?
Answer: Sum of moments = 0

Q37: Equilibrium condition in perpendicular directions?
Answer: Sum of components = 0

Q38: Principle of transmissibility?
Answer: Force effect same along line of action

Q39: Turning key applies?
Answer: Couple

Q40: Weight of body is due to?
Answer: Gravitational force

Q41: Wrong friction statement?
Answer: Proportional to velocity

Q42: Friction at top of ladder is?
Answer: Zero

Q43: Coefficient of friction is?
Answer: Ratio of limiting friction to normal reaction

Q44: Force pulling up inclined plane equals?
Answer: W tan(α + φ)

Q45: Rain + umbrella direction?
Answer: More inclined

Q46: Motion equation acceleration is?
Answer: 6t − 8

Q47: Projectile maximum range angle is?
Answer: 45°

Q48: Coulomb friction is between?
Answer: Dry surfaces

Q49: Screw jack effort is?
Answer: W tan(α + φ)

Q50: Limiting friction is?
Answer: Max friction before motion

Q51: Couple cannot be balanced by?
Answer: Single force

Q52: Coefficient of friction depends on?
Answer: Nature of surfaces

Q53: Perfect frame equation is?
Answer: n = 2j − 3

Q54: Flywheel revolutions approx?
Answer: 50

Q55: Distance under acceleration 5 m/s² in 5s?
Answer: 62.5 m

Q56: Locus giving hyperbola is?
Answer: Hyperbola

Q57: C.G. hemisphere is at?
Answer: 3r/8

Q58: NOT unit of energy?
Answer: Watt

Q59: Density comparison problem result?
Answer: Metal twice as dense

Q60: C.G. right cone from base?
Answer: h/4

Q61: C.G. of right triangle lamina?
Answer: Not at geometric center

Q62: M.I. hollow section comparison?
Answer: Double

Q63: Angle of repose is?
Answer: Angle of impending motion

Q64: Ideal machine condition?
Answer: MA = VR

Q65: Actual machine condition?
Answer: MA < VR

Q66: Cable load shape?
Answer: Parabola

Q67: Equilibrium condition requires?
Answer: ΣF = 0 and ΣM = 0

Q68: Moment of couple about any point?
Answer: Same constant value

Q69: Tangent of friction angle equals?
Answer: Coefficient of friction

Q70: Limiting friction acts when?
Answer: Just about to move

Q71: Dynamic vs static friction?
Answer: Dynamic is less

Q72: Coplanar forces lie in?
Answer: One plane

Q73: SI unit of force?
Answer: Newton

Q74: Force may?
Answer: All of the above

Q75: Force effect depends on?
Answer: All of the above

Q76: Force defined by?
Answer: Magnitude, direction, point of application

Q77: Multiple forces can be replaced by?
Answer: Single resultant

Q78: Polygon law of forces states?
Answer: Closed polygon → equilibrium

Q79: Concurrent forces meet at?
Answer: One point

Q80: SI unit of work?
Answer: Joule

Q81: NOT unit of pressure?
Answer: Newton

Q82: Smith’s tongs lever type?
Answer: Third class lever

Q83: Triangle representation of non-coplanar forces?
Answer: Not equilibrium

Q84: Resolution principle states?
Answer: Component sum equals resultant

Q85: NOT unit of power?
Answer: kcal/kg sec

Q86: Different dimensions are?
Answer: Moment of force and angular momentum

Q87: Resultant of two equal forces?
Answer: 2P cos(θ/2)

Q88: SI unit of power?
Answer: Watt

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Automotive / Automobile Engineering

Q1: What is an Automobile?
Answer: All of the mentioned

Q2: Automobile can be classified based on which parameter?
Answer: All of the mentioned

Q3: Classification of automobiles based on load?
Answer: Heavy Transport Vehicle (HTV)

Q4: Suspension in automobiles is provided by?
Answer: All of the mentioned

Q5: Which is not part of transmission system?
Answer: Wheels

Q6: First automobile was built in?
Answer: 1769

Q7: Classification of IC engine?
Answer: All of the above

Q8: Function of alternator?
Answer: Recharging the battery

Q9: Automobile with two/four doors?
Answer: Sedan

Q10: Electrical system contains?
Answer: All of the mentioned

Q11: Hindustan Motors Ltd established in?
Answer: 1943

Q12: Automobile description requires?
Answer: All of the mentioned

Q13: Load supported by automobile frame?
Answer: All of the mentioned

Q14: Not part of chassis?
Answer: Differential

Q15: Hood scoop is used for?
Answer: Direct airflow into engine

Q16: Not necessary for automobile description?
Answer: Colour

Q17: Compact executive car example?
Answer: Audi A4

Q18: Convertible car example?
Answer: Honda S2000

Q19: IC engine definition?
Answer: Fuel burns inside engine

Q20: Cylinder arrangement NOT valid?
Answer: Circular

Q21: Cylinder head type?
Answer: F-head

Q22: Piston temperature highest at?
Answer: Crown

Q23: Ignition advance term?
Answer: All of the mentioned

Q24: Blow-by means?
Answer: Escape of gases into crankcase

Q25: Connecting rod material?
Answer: Forged steel

Q26: Gasket types?
Answer: All of the mentioned

Q27: Aluminium crankcase advantage?
Answer: Lightweight and easy replacement

Q28: Not part of cylinder block?
Answer: Carburetor

Q29: Cooling water passages provided in?
Answer: Cylinder head

Q30: Crankcase is attached to?
Answer: Cylinder block bottom

Q31: Oil sump function?
Answer: Cooling and ventilation of oil

Q32: Engine types are?
Answer: SI and CI engines

Q33: Basic automobile structure includes?
Answer: Frame

Q34: Not a vehicle type by use?
Answer: HTV

Q35: Laminated glass property?
Answer: Prevents fragment scattering

Q36: Camshaft controls?
Answer: All of these

Q37: X-member improves?
Answer: Resistance to side wind

Q38: HTV means?
Answer: Heavy Transport Vehicle

Q39: Piston pins are usually?
Answer: Fully floating

Q40: Main bearings in 4-cylinder engine?
Answer: 4

Q41: Birthplace of automobile?
Answer: Germany

Q42: Indian scooter manufacturers?
Answer: All of the above

Q43: De Dion axle is?
Answer: Differential supported in frame

Q44: EFI system used in?
Answer: All of these

Q45: Brake system function?
Answer: Stop vehicle

Q46: First motor car in India?
Answer: 1898

Q47: Gross vehicle weight means?
Answer: Maximum operating weight

Q48: Service brakes are operated?
Answer: Hydraulically

Q49: Cylinder bores plated with?
Answer: Chromium

Q50: Rack and pinion attached to?
Answer: Tie rod

Q51: Microprocessor ignition used in?
Answer: Volvo 740 Turbo

Q52: Most common engine valve?
Answer: Poppet valve

Q53: Autothermic piston steel inserts?
Answer: Control expansion direction

Q54: Steering system function?
Answer: Control direction of wheels

Q55: Tool for tightening faster?
Answer: Braced handle

Q56: Wheelbase (dual axle) measured from?
Answer: Cab rear to last axle

Q57: Main part of chassis?
Answer: All of these

Q58: Crank angle in 6-cylinder engine?
Answer: 120°

Q59: Clutch function?
Answer: Smooth power transmission

Q60: Maruti Udyog types?
Answer: All of these

Q61: Suspension function?
Answer: Absorb vibrations

Q62: Exhaust valve angle?
Answer: 45°

Q63: Engine valves are closed by?
Answer: Valve springs

Q64: Bus type?
Answer: Single & double deck

Q65: Stroke means?
Answer: Piston movement both directions

Q66: Bumpers used for?
Answer: Reduce collision impact

Q67: Cylinder blocks made of?
Answer: All of the above

Q68: Propeller shaft center made of?
Answer: Steel tube

Q69: DOHC engine used in?
Answer: All of these

Q70: Sedan classification?
Answer: Two or four doors

Q71: Front engine rear wheel drive shaft has?
Answer: Minimum two universal joints

Q72: Most common automobile power plant?
Answer: IC engine

Q73: Seat belt type?
Answer: Three point

Q74: Car washer pressure approx?
Answer: 3 MPa

Q75: Wheelbase definition?
Answer: Distance between wheel centers

Q76: Delivery van type?
Answer: Light vehicle

Q77: Moped capacity?
Answer: 50 cc

Q78: Piston skirt clearance?
Answer: 0.04 mm

Q79: Chassis dynamometer measures power at?
Answer: Wheels

Q80: Valve face angle range?
Answer: 30°–45°

Q81: Valves made of?
Answer: Nickel chrome steel

Q82: Four wheel drive advantage?
Answer: More traction

Q83: Hard moped company?
Answer: Sain and Pandit

Q84: Feeler gauge used for?
Answer: Clearance measurement

Q85: Piston pin offset direction?
Answer: Left side

Q86: Steam engine cut-off governing changes?
Answer: Steam volume per stroke

Q87: Types of axle?
Answer: Dead and live

Q88: Basic purpose of 4WD system is?
Answer: Ensures effective transmission of engine torque to all four wheels on slippery roads

Q89: Engine oil pan is made of?
Answer: Steel or aluminium

Q90: Motorcycle with maximum power rating?
Answer: Yamaha

Q91: Whirling of propeller shaft is due to?
Answer: Lack of balance and excessive length

Q92: Two-piece propeller shaft requires?
Answer: Centre support bearing

Q93: Front axle is fitted at front of vehicle by?
Answer: Spring assemblies

Q94: Camshaft speed in 4-stroke engine is?
Answer: Half of crankshaft speed

Q95: Popular drive at rear axle (passenger car)?
Answer: Hypoid drive

Q96: Power plant of vehicle is?
Answer: Engine

Q97: Wings of vehicle are?
Answer: Rear spoilers

Q98: Radiator core material?
Answer: Brass

Q99: Coupling between engine and rear wheels is?
Answer: Transmission

Q100: V12 engine is used in?
Answer: Rolls Royce Phantom

Q101: Five-cylinder inline engine used in?
Answer: Audi 100 SE

Q102: Frameless construction is economical when?
Answer: Mass production

Q103: 4WD vehicle has how many gearboxes?
Answer: 2

Q104: Rear axle used in trucks?
Answer: Fully floating

Q105: Compression ratio 17 used in?
Answer: Ashok Leyland Comet

Q106: Inlet valve material?
Answer: Silicon-chrome steel

Q107: First motor car race held in?
Answer: 1895

Q108: Each time joint assembled, replace?
Answer: All gaskets

Q109: Head restraints are?
Answer: Automotive safety feature

Q110: Distance between front wheels is?
Answer: Wheel track

Q111: Three-quarter floating axle shaft stress?
Answer: Torsional stress only

Q112: Frame supports engine, power train and?
Answer: Wheels

Q113: Damper is also called?
Answer: Shock absorber

Q114: Crankshaft counterweights are opposite?
Answer: Big end bearings

Q115: Two-stroke engine identified by?
Answer: Absence of valves

Q116: Valve overlap occurs between?
Answer: Exhaust and intake strokes

Q117: Cooling system is simplest when engine is at?
Answer: Front

Q118: Front axle is fitted by?
Answer: Spring assemblies

Q119: Included angle =?
Answer: Camber + SAI

Q120: Cylinder block material?
Answer: Cast iron and aluminium alloy

Q121: Firing order of 6-cylinder engine?
Answer: 1-5-3-6-2-4

Q122: Catalytic converter used in?
Answer: All of these

Q123: Wheel center is called?
Answer: Hub

Q124: Piston rings control?
Answer: All of the above

Q125: Conventional car has?
Answer: Four forward speeds

Q126: Semi-floating axle bearing is located?
Answer: On axle inside casing

Q127: Compression rings are made of?
Answer: Cast iron

Q128: Wheel base is?
Answer: Distance between front and rear wheel centers

Q129: Floating axles classified on basis of?
Answer: Nature of forces

Q130: Engine layout in commercial vehicles for weight distribution?
Answer: Better weight distribution

Q131: ABS function is?
Answer: Maintains directional control during braking

Q132: Runout measuring tool?
Answer: Dial indicator (MCQ key given: micrometer)

Q133: Cylinder liner fit?
Answer: Interference fit

Q134: Indian truck manufacturers?
Answer: All of these

Q135: Hotchkiss drive torque absorbed by?
Answer: Rear springs

Q136: Semi-floating axle support?
Answer: Bearings inside axle casing

Q137: Negative castor is?
Answer: Steering geometry angle

Q138: Cabriolet seats?
Answer: 4

Q139: Water pump rotating part is?
Answer: Impeller