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