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You Are On Multi Choice Question Bank SET 1177
58851. Total electrical degrees for a 4 pole AC machine is equal to:
(A): 1800 (B): 3600 (C): 7200 (D): 10800
58852. Which element is used as semiconductor material?
(A): Copper (B): Plastic (C): Silicon (D): Tungston
58853. Highest dopped region in a transistor is:
(A): Emitter (B): Base (C): Collector (D): All equally
58854. Energy radiated continuously in the form of light-waves is called:
(A): Lumen (B): Illumination (C): Luminous intensity (D): Luminous-flux
58855. What is the working temperature of a thoriated tungsten filament?
(A): 16000C (B): 17000C (C): 18000C (D): 20000C
58856. Impurities in an electrolyte can cause an internal short-circuit condition called:
(A): Electrolysis (B): Depolarization (C): Polarization (D): Local action
58857. Permanent magnets are normally made of:
(A): Aluminium (B): Wrought iron (C): Cast iron (D): Alnico alloys
58858. Induction instruments have found widest application as:
(A): Watt hour meter (B): Frequency meter (C): Voltmeter (D): Ammeter
58859. The power factor of an ordinary electric bulb is:
(A): Zero (B): Unity (C): Lagging (D): Leading
58860. Function of a relay is:
(A): Fault detection (B): Energize the tripping circuit (C): Bothand (D): None of the above
58861. The electrolyte of lead acid battery is:
(A): H2SO4 (B): PbSO4 (C): H2O (D): KOH
58862. In ac AC circuit,the ratio of KW/KVA represents:
(A): Load power factor (B): Form factor (C): Power factor (D): Diversity factor
58863. The ratio of average load to the maximum demand during a given period is known as:
(A): Average factor (B): Demand factor (C): Load factor (D): Power factor
58864. The capacitance of a transmission line is a:
(A): Series element (B): Shunt element (C): Eitheror (D): None of these
58865. If the diameter of conductor decreases,inductance of the line is:
(A): Increased (B): Decreased (C): Not affected (D): None of these
58866. If the power factor of the load decreases,the line losses:
(A): Not changed (B): Decreased (C): Increased (D): Eitheror
58867. Under operating conditions,the maximum stress in a cable is at:
(A): Centre of conductor (B): End of conductor (C): Same (D): Conductor surface
58868. In practice,tap-changing is performed on load so that there is------------to supply
(A): Interrupted (B): No interruption (C): Eitheror (D): None of these
58869. The principle cause of voltage variation in system is depend on:
(A): Power factor (B): Frequency (C): Size of conductor (D): Load
58870. Forced-blast circuit breakers have--------------speed of circuit interruption.
(A): Low (B): Medium (C): High (D): Very high
58871. The time current characteristics of a fuse has:
(A): Direct (B): Inverse (C): Linear (D): None of these
58872. The melting point of fuse element should have:
(A): Low (B): Medium (C): High (D): Very High
58873. Capacitive current breaking result is:
(A): Current surges (B): Harmonics (C): Arcing (D): Voltage surges
58874. The voltage build-up process of a de generator is:
(A): Difficult (B): Delayed (C): Infinite (D): Cumulative
58875. The voltage regulation of an over compound dc generator is always:
(A): Negative (B): Postitive (C): Zero (D): High
58876. The normal value of the armature resistance of a dc motor is:
(A): 0.005 (B): 0.5 (C): 10 (D): 100
58877. A dc motor develops a torque of 200 N-m at 25 rps.At 20 rps it will develop a torque of--------------N-m.
(A): 128 (B): 160 (C): 200 (D): 250
58878. The speed of dc motor is inversely its:
(A): Flux (B): Voltage (C): Frequency (D): Pole
58879. Which test for using to find stray losses on dc shunt motor?
(A): Hopkinson’s (B): Swinburne’s (C): Field’s (D): Retradation
58880. A T-T transformer cannot be paralleled with-----------transformer.
(A): V-V (B): Y-Delta (C): Y-Y (D): Delta-Delta
58881. The rpm of turbo alternator has:
(A): Low (B): Medium (C): High (D): Any of these
58882. The efficiency of a 3-phase induction motor is approximately proportional to:
(A): S (B): N (C): Ns (D): (1-S)
58883. To change the DOR of repulsion motor is:
(A): To shift brush position (B): To interchange phase and neutral (C): To varying frequency (D): All of the above
58884. In dual cycle the heat is added at:
(A): Constant temperature and pressure (B): Constant pressure and constant volume (C): Cosntant pressure and constant temperature (D): Constant pressure and adiabatic
58885. The pipes connected with F.I.P and injector is made of:
(A): Copper (B): Aluminium (C): Steel (D): Braided P.V.C
58886. Catalytic converter is fitted in between:
(A): Intel manifold and fuel pump (B): Exhaust manifold and port (C): Inlet manifold and crank case (D): Exhaust manifold and silencer
58887. In maintenance free battery the plate grids are made of:
(A): Lead and calcium (B): Lead and antimony (C): Lead and arsenic (D): Lead and beryllium
58888. Cylinder liners are made of:
(A): Alloy steel (B): Cast iron (C): Forged steel (D): Gun metal
58889. Outward tilting of the front wheel at top in vertical line:
(A): Negative camber (B): Positive caster (C): King pin inclination (D): Positive camber
58890. In torsion bar suspension the road shock absorbed the torsion bar by:
(A): Compression (B): Tension (C): Twisting (D): Deflection
58891. The straightness of a cam shaft can be checked by:
(A): Straight edge (B): Steel rule (C): Dial gauge (D): Bevel gauge
58892. De-dion axles are used in:
(A): Rear five axle with independent suspension (B): Rear dead axle with rigid axle suspension (C): Front live axle with independent suspension (D): Front dead axle with rigid axle suspension
58893. The valves contain in the pressure cap of radiator is:
(A): Vacuum and pressure valves (B): Atmospheric and vacuum valve (C): Blow of valve (D): Thermostat valve
58894. If the unsprung weight is kept maximum,causes:
(A): Uncomfortable ride (B): Better stability (C): Comfortable ride (D): Reduce side thrust
58895. The energy produced by the engine is loss through the exhaust gas is:
(A): 0.1 (B): 0.3 (C): 0.25 (D): 35%
58896. Thermostat is located in between:
(A): Water pump and collector tank (B): Cylinder head and header tank (C): Water pump and header tank (D): Water pump and water jacket
58897. Knocking tendency in S.I.engine can be reduced by:
(A): Increasing compression ratio (B): Increasing wall temperature (C): Decreasing engine speed (D): Increasing engine speed
58898. Most commonly used lubricants are made from:
(A): Animal oil (B): Vegetable oil (C): Mineral oil (D): Synthetic material
58899. Unit of kinematic viscosity is:
(A): Centi stock (B): Centi poise (C): Milli stock (D): Milli poise
58900. The ratio speed of cam shaft and skew gear of oil pump is:
(A): 0.084027777777778 (B): 0.12569444444444 (C): 1:1 (D): 0.043055555555556
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