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 Electric current passing through the circuit produces luminous effect magnetic effect thermal effect chemical effect 2 / 25 Resistance of a tungsten lamp as applied voltage increases remains same increases none of the above decreases 3 / 25 For which of the following ‘ampere second’ could be the unit ? Energy Reluctance Charge Power 4 / 25 When electric current passes through a metallic conductor its temperature rises. This is due to mutual collisions between metal atoms mutual collisions between conducting electrons the release of conduction electrons from parent atoms collisions between conduction electrons and atoms 5 / 25 Which of the following statement is true both for a series and a parallel D.C. circuit? Elements have individual currents Power are additive Currents are additive Voltages are additive 6 / 25 Two resistors are said to be connected in series when sum of IR drops equals the applied e.m.f. both carry the same value of current same current passes in turn through both total current equals the sum of branch currents 7 / 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 ? 18 Q 48 Q 64 Q 36 Q 8 / 25 With rise in temperature the resistance of pure metals increases decreases remains constant first increases and then decreases 9 / 25 All of the following are equivalent to watt except joules/sec. (amperes) ohm amperes/volt amperes x volts 10 / 25 An electric filament bulb can be worked from All above Battery supply only D.C. supply only A.C. supply only 11 / 25 With rise in temperature the resistance of semi-conductors decreases increases remains constant first increases and then decreases 12 / 25 Whether circuit may be AC. or D.C. one following is most effective in reducing the magnitude of the current. Inductor Resistor Capacitor Reactor 13 / 25 The resistance of a conductor varies inversely as resistivity temperature length area of cross-section 14 / 25 A resistance having rating 10 ohms 10 W is likely to be a carbon resistor wire wound resistor variable resistor metallic resistor 15 / 25 Insulating materials have the function of storing very high currents conducting very large currents preventing an open circuit between the voltage source and the load preventing a short circuit between conducting wires 16 / 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 17 / 25 Which is the best conductor of electricity ? Silver Carbon Copper Iron 18 / 25 Which one of the following does not have negative temperature co-efficient ? Rubber Aluminium Paper Mica 19 / 25 Which of the following quantities remain the same in all parts of a series circuit ? Current Power Voltage Resistance 20 / 25 Resistance of a material always decreases if temperature of material is increased number of free electrons available become more temperature of material is decreased none of the above is correct 21 / 25 Which of the following materials has a negative temperature co-efficient of resistance? Carbon Aluminum Copper Brass 22 / 25 If the efficiency of a machine is to be high what should be low ? True component of power kWh consumed Input power Losses 23 / 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 24 / 25 Varistors are carbon resistors non-linear resistors insulators resistors with zero temperature coefficient 25 / 25 Ohm’s law is not applicable to circuits with low current densities vacuum tubes carbon resistors high voltage circuits कृपया सही सूचना भरें ताकि सर्टिफिकेट ईमेल पर भेजा जा सकें। NameEmailPhone NumberDistrictSchool/Coaching Name Your score is LinkedIn Facebook Twitter VKontakte 0% Restart quiz आपको यह क्विज अच्छी लगी तो 5 स्टार रेटिंग जरुर दें । Send feedback
