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 A resistance having rating 10 ohms 10 W is likely to be a metallic resistor variable resistor carbon resistor wire wound resistor 2 / 25 Resistance of a tungsten lamp as applied voltage increases increases none of the above decreases remains same 3 / 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 has no effect on heating if water length of heating element should be decreased length of heating element should be increased 4 / 25 The resistance of a conductor varies inversely as temperature area of cross-section length resistivity 5 / 25 For which of the following ‘ampere second’ could be the unit ? Power Charge Reluctance Energy 6 / 25 Which of the following materials has a negative temperature co-efficient of resistance? Copper Carbon Brass Aluminum 7 / 25 Which of the following quantities remain the same in all parts of a series circuit ? Resistance Voltage Power Current 8 / 25 With rise in temperature the resistance of pure metals increases first increases and then decreases decreases remains constant 9 / 25 Which one of the following does not have negative temperature co-efficient ? Paper Rubber Mica Aluminium 10 / 25 Which of the following statement is true both for a series and a parallel D.C. circuit? Currents are additive Elements have individual currents Voltages are additive Power are additive 11 / 25 An electric filament bulb can be worked from Battery supply only All above A.C. supply only D.C. supply only 12 / 25 Varistors are resistors with zero temperature coefficient non-linear resistors carbon resistors insulators 13 / 25 All of the following are equivalent to watt except amperes/volt (amperes) ohm amperes x volts joules/sec. 14 / 25 With rise in temperature the resistance of semi-conductors remains constant decreases first increases and then decreases increases 15 / 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 both carry the same value of current sum of IR drops equals the applied e.m.f. 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 ? 64 Q 36 Q 18 Q 48 Q 17 / 25 Insulating materials have the function of preventing a short circuit between conducting wires conducting very large currents storing very high currents preventing an open circuit between the voltage source and the load 18 / 25 If the efficiency of a machine is to be high what should be low ? Input power Losses kWh consumed True component of power 19 / 25 Resistance of a material always decreases if none of the above is correct temperature of material is increased number of free electrons available become more temperature of material is decreased 20 / 25 Ohm’s law is not applicable to carbon resistors circuits with low current densities vacuum tubes high voltage circuits 21 / 25 Electric current passing through the circuit produces chemical effect magnetic effect thermal effect luminous effect 22 / 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 metal atoms collisions between conduction electrons and atoms mutual collisions between conducting electrons 23 / 25 Whether circuit may be AC. or D.C. one following is most effective in reducing the magnitude of the current. Resistor Reactor Capacitor Inductor 24 / 25 Which is the best conductor of electricity ? Silver Copper Carbon Iron 25 / 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 heater will burn out remain same 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
