Current Electricity Quiz Set 1 in English Posted on June 10, 2020September 8, 2020 by Surendra 0% 4 Created by Surendra Current Electricity Quiz in English Set 1 All Important Question Answers for Electrician Related Exams 1 / 25 Whether circuit may be AC. or D.C. one following is most effective in reducing the magnitude of the current. Inductor Resistor Reactor Capacitor 2 / 25 An electric filament bulb can be worked from Battery supply only D.C. supply only All above A.C. supply only 3 / 25 Varistors are insulators resistors with zero temperature coefficient non-linear resistors carbon resistors 4 / 25 Resistance of a material always decreases if none of the above is correct temperature of material is decreased number of free electrons available become more temperature of material is increased 5 / 25 Resistance of a tungsten lamp as applied voltage increases increases remains same none of the above decreases 6 / 25 Ohm’s law is not applicable to circuits with low current densities carbon resistors vacuum tubes high voltage circuits 7 / 25 The resistance of a conductor varies inversely as temperature area of cross-section resistivity length 8 / 25 The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms what is the resistance of the other ? 48 Q 64 Q 36 Q 18 Q 9 / 25 A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb the heater output will heater will burn out increase remain same decrease 10 / 25 A resistance having rating 10 ohms 10 W is likely to be a variable resistor carbon resistor wire wound resistor metallic resistor 11 / 25 Which of the following materials has a negative temperature co-efficient of resistance? Aluminum Carbon Brass Copper 12 / 25 When electric current passes through a metallic conductor its temperature rises. This is due to mutual collisions between metal atoms collisions between conduction electrons and atoms the release of conduction electrons from parent atoms mutual collisions between conducting electrons 13 / 25 Electric current passing through the circuit produces magnetic effect chemical effect luminous effect thermal effect 14 / 25 With rise in temperature the resistance of semi-conductors remains constant decreases first increases and then decreases increases 15 / 25 All of the following are equivalent to watt except joules/sec. amperes/volt (amperes) ohm amperes x volts 16 / 25 With rise in temperature the resistance of pure metals decreases first increases and then decreases remains constant increases 17 / 25 Which one of the following does not have negative temperature co-efficient ? Paper Mica Rubber Aluminium 18 / 25 Which of the following statement is true both for a series and a parallel D.C. circuit? Voltages are additive Currents are additive Elements have individual currents Power are additive 19 / 25 Which of the following quantities remain the same in all parts of a series circuit ? Current Resistance Voltage Power 20 / 25 In an electric kettle water boils in 10 m minutes. It is required to boil the boiler in 15 minutes using same supply mains none of the above length of heating element should be increased length of heating element should be decreased length of heating element has no effect on heating if water 21 / 25 Two resistors are said to be connected in series when both carry the same value of current sum of IR drops equals the applied e.m.f. same current passes in turn through both total current equals the sum of branch currents 22 / 25 Insulating materials have the function of preventing an open circuit between the voltage source and the load preventing a short circuit between conducting wires storing very high currents conducting very large currents 23 / 25 For which of the following ‘ampere second’ could be the unit ? Reluctance Energy Power Charge 24 / 25 Which is the best conductor of electricity ? Copper Iron Silver Carbon 25 / 25 If the efficiency of a machine is to be high what should be low ? True component of power Losses kWh consumed Input power कृपया सही सूचना भरें ताकि सर्टिफिकेट ईमेल पर भेजा जा सकें। Your score is LinkedIn Facebook Twitter 0% Restart quiz आपको यह क्विज अच्छी लगी तो 5 स्टार रेटिंग जरुर दें । Send feedback
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