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