Basic_Electronics49984.doc - Basic Electronics Objective Questions from Measurements Instrumentation[1 A CRO can display(a AC signals(b DC signals(c

Basic_Electronics49984.doc - Basic Electronics Objective...

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Basic ElectronicsObjective Questions from Measurements Instrumentation[1] A CRO can display(a) AC signals(b) DC signals(c) Both AC and DC signals(d) Time invariant signalsAns: CAnswer[2] The internal resistance of an ammeter should beAnswer[3] A galvanometer has(a) air friction damping(b) fluid friction damping(c) Spring coil damping(d) Eddy current dampingAns:DAnswer[4] Electrostatic instruments are normally used for(a) Low current measurements(b) High current measurements(c) Low voltage measurements(d) High voltage measurementsAns:DAnswer[5] In a moving coil instrument, the deflecting torque is proportional toAnswer
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[6] The absolute measurement of resistance is done byAnswer[7] To measure the flux, devices used are based on(a) Voltaic effect(b) Piezo-electric effect(c) Hall effect(d) Photo-voltaic effectAns:CAnswer[8] The form factor in AC is the ratio of(a) peak value to average value(b) peak value to rms value(c) rms value to average value(d) rms value to peak valueAns:CAnswer[9] PMMC type instruments normally use(a) Air friction damping(b) Fluid friction damping(c) Eddy current damping(d) None of the aboveAns: CAnswer[10] In a moving iron meter, the deflecting torque is proportional to(a) Current through the coil(b) Square of the current through the coil(c) Sine of the measurand(d) Squareroot of the measurandAns: BAnswer[11] In a gravity controlled instrument, the deflection angle is proportional(a) Measurand
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(b) Square of the measurand(c) sine inverse of measurand(d) sine of the measurandAns: CAnswer[12] Ampere is one of the[13] Direct method is used to measureAnswerPlease leave your comments and questions below...Basic Electrical objective type questions: Part-13Posted: 23 Jul 2014 10:19 AM PDTElectrical Objective Questions with Answers:[1] In a uniform electric field, field lines and equipotentials [Gate 1997 ]a) Are parallel to one anotherb) Intersect at 45 degc) Intersect at 30 degd) Are orthogonalAns:DAnswer[2] For a pulse transformer, the material used for its core and the possible turn ratio from primay tosecondary are respectively
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