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