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