First Year W.Cal & Science, Module 7-Basic Electricity

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COMMON FOR ALL ENGG. TRADES 1St Year. ("முடியும் வரை முயற்சி செய்
உன்னால் முடியும் வரை அல்ல நீ நினைத்ததை முடிக்கும் வரை"...)

NAME *

NAME OF THE ITI *

MOBILE NUMBER *

1 : Which machine converts mechanical energy into electrical energy? *

2 points

A : Battery

B : Generator

C : Heater

D : Iron box

2 : Which is the unit of current? *

2 points

A : Ampere

B : Volt

C : Ohm

D : Watt

3 : Which is the unit of resistance? *

2 points

A : Ampere

B : Volt

C : Ohm

D : Watt

4 : What is the flow of electrons in any conductor? *

2 points

A : Voltage

B : Current

C : Resistance

D : Power

5 : Which property of a substance is opposing the flow of electric current? *

2 points

A : Current

B : Voltage

C : Resistance

D : EMF

6 : Which is very good conductor? *

2 points

A : Copper

B : Cast iron

C : Wrought iron

D : Steel

7 : Which is mineral insulator? *

2 points

A : Glass

B : Quartz

C : Mica, Marble

D : Porcelain

8 : What is the total resistance if three resistances of 3 ohms, 9 ohms and 5 ohms are connected in series? *

2 points

A : 11 ohms

B : 7 ohms

C : 17 ohms

D : 1/17 ohms

9 : What is the total resistance if two resistances of 4 ohms and 6 ohms are connected in parallel? *

2 points

A: 2.9

B : 2.4

C : 5

D : 3

10 : What is the total resistance if three resistances of 4 ohms, 6 ohms and 8 ohms respectively are connected in parallel? *

2 points

A : 2.4

B : 1.3

C : 1.8

D : 3.4

11 : Which is same in series connection of resistors in a circuit? *

2 points

A : Current

B : Voltage

C : Resistance

D : Power

12 : Which law states that at constant temperature the current passing through a closed circuit is directly proportional to the potential difference and inversely proportional to the resistance? *

2 points

A : Ohm´s law

B : Lenz´s law

C : Newton´s law

D : Hooke´s law

13 : What is the resistance?I = 11.5 Amps V = 380 Volts R = _______Ohms *

2 points

A : 13 ohms

B : 23 ohms

C : 33 ohms

D : 43 ohms

14 : What is the current?R = 50 Ohms 220 Volts I =______Amps *

2 points

A : 4.1 Amps

B : 4.2 Amps

C : 4.3 Amps

D : 4.4 Amps

15 : What is the voltage?R = 250 Ohms I = 0.44 Amps V = _____Volts . *

2 points

A : 100 Volts

B : 105 Volts

C : 108 Volts

D : 110 Volts

16 : Which statement is correct according to ohm´s law? *

2 points

A : I µ 1/V

B : I µ R

C : I µ V/R

D : I µ R/V

17 : What is the filament resistance if a 6 volt bulb draws a current of 0.5 Amps? *

2 points

A : 12 W

B : 10 W

C : 3 W

D : 1.2 W

18 : How much watt second in 1 watt hour? *

2 points

A : 1000 watt sec

B : 2000 watt sec

C : 3600 watt sec

D : 4000 watt sec

19 : What is the power if an emf of one volt causes a current flow of 1 ampere? *

2 points

A : 1 watt

B : 1 kilowatt

C : 1 HP

D : 1 Kilowatt hour

20 : Which is equal to electric power? *

2 points

A : R2I watts

B : I2R watts

C: V/R watts

D: R/V watts

21 : How much power does it consumes if an electric heater draws a current of 10 amps at 200 volts? *

2 points

A : 2000 watts

B : 2010 watts

C : 2020 watts

D : 2030 watts

22 : What is the resistance of an electric iron if the rating of electric iron is 220 V and 500 watts? *

2 points

A : 94.8 ohms

B : 95.8 ohms

C : 96.8 ohms

D : 97.8 ohms

23 : What is the voltage of the immersion heater?P = 500 watts I = 2.27 Amps V = ______Volts *

2 points

A : 200.3 volts

B : 210.3 volts

C : 220.3 volts

D : 230.3 volts

24 : What is the unit of intensity of magnetic field? *

2 points

A : wb/m

B : m/wb

C : Hertz

D : Coloumb

25 : Which law states about electromagnetic induction? *

2 points

A : Ohm´s law

B : Hooke´s law

C : Lenz´s law

D : Faraday´s law

26 : What is the formula for induced emf? *

2 points

A : B2L sinq volts

B : BL sinq volts

C : BLV sinq volts

D : B2V sinq volts

27 : What does EMF stands for? *

2 points

A : Electronic Magnetic Force

B : Electro Motive Force

C : Electro Magnetic Force

D : Electromated Force

28 : Which is the example for statically induced emf? *

2 points

A : Generator

B : Motor

C : Transformer

D : Refrigerator

29 : Which is the example for dynamically induced Emf? *

2 points

A : Motor

B : Generator

C : Car

D : Motor bike

30 : Which is the unit electrical power? *

2 points

A : Volts

B : Ohms

C : Watts

D : Ampere

31 : What is the current Flow in the bulb?P = 550 watts R = 22 Ohms I = ______Amps . *

2 points

A : 2 Amps

B : 3 Amps

C : 4 Amps

D : 5 Amps

32 : What is the power required?I = 0.455 Amps R = 484 Ohms P = _____Watts . *

2 points

A : 98.2 watts

B : 99.2 watts

C : 100.2 watts

D : 101.2 watts

33 : What is the rated power if an adjustable resistor bears the following labelled k ohms/ 0.08 A? *

2 points

A : 9.2 watts

B : 9.4 watts

C : 9.6 watts

D : 9.8 watts

34 : How much voltage will be required to illuminate a 40 watts fluorescent lamp draws a current of 0.10 amperes? *

2 points

A : 390 volts

B : 395 volts

C : 400 volts

D : 405 volts

35 : How many hours will take for a 100 watts bulb to consume 1 kWh energy? W = 1 KwH, P = 100 Watts = _____Hours *

2 points

A : 10 hours

B : 12 hours

C : 18 hours

D : 24 hours

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