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 Varistors are resistors with zero temperature coefficient insulators non-linear resistors carbon resistors 2 / 25 Electric current passing through the circuit produces chemical effect luminous effect thermal effect magnetic effect 3 / 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 4 / 25 Which one of the following does not have negative temperature co-efficient ? Rubber Aluminium Paper Mica 5 / 25 The resistance of a conductor varies inversely as temperature area of cross-section length resistivity 6 / 25 Two resistors are said to be connected in series when 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 both carry the same value of current 7 / 25 Which of the following materials has a negative temperature co-efficient of resistance? Brass Copper Carbon Aluminum 8 / 25 With rise in temperature the resistance of semi-conductors remains constant decreases increases first increases and then decreases 9 / 25 With rise in temperature the resistance of pure metals remains constant increases decreases first increases and then decreases 10 / 25 For which of the following ‘ampere second’ could be the unit ? Reluctance Power Energy Charge 11 / 25 Which is the best conductor of electricity ? Copper Iron Carbon Silver 12 / 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 13 / 25 A resistance having rating 10 ohms 10 W is likely to be a variable resistor metallic resistor wire wound resistor carbon resistor 14 / 25 Which of the following quantities remain the same in all parts of a series circuit ? Resistance Power Voltage Current 15 / 25 If the efficiency of a machine is to be high what should be low ? kWh consumed Losses True component of power Input power 16 / 25 All of the following are equivalent to watt except (amperes) ohm joules/sec. amperes/volt amperes x volts 17 / 25 Insulating materials have the function of conducting very large currents preventing an open circuit between the voltage source and the load preventing a short circuit between conducting wires storing very high currents 18 / 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 should be increased none of the above length of heating element should be decreased length of heating element has no effect on heating if water 19 / 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 increase heater will burn out decrease remain same 20 / 25 Whether circuit may be AC. or D.C. one following is most effective in reducing the magnitude of the current. Inductor Capacitor Resistor Reactor 21 / 25 Which of the following statement is true both for a series and a parallel D.C. circuit? Power are additive Voltages are additive Elements have individual currents Currents are additive 22 / 25 When electric current passes through a metallic conductor its temperature rises. This is due to mutual collisions between conducting electrons collisions between conduction electrons and atoms mutual collisions between metal atoms the release of conduction electrons from parent atoms 23 / 25 Resistance of a tungsten lamp as applied voltage increases increases none of the above remains same decreases 24 / 25 An electric filament bulb can be worked from All above Battery supply only A.C. supply only D.C. supply only 25 / 25 Ohm’s law is not applicable to vacuum tubes carbon resistors circuits with low current densities high voltage circuits 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
