Bharat Skills Electrician Question CITS/ITI के Theory Question – Basic Electricity के 50 से ज्यादा Question जो की BHARAT SKILLS और NIMI वेबसाइट से है
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Bharat Skills Electrician Question CITS /ITI Basic Electricity
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Bharat Skills Electrician Question Basic Electricity Question Level 1
1. Which law states that in closed electric circuit, the applied voltage is equal to the sum of the voltage drops?
A Ohm’s law
B Laws of resistance
C Kirchhoff’s first law
D Kirchhoff’s second law
Answer.
D. Kirchhoff’s second law
2 .What is the formula for the equivalent resistance (RT) of the three resistors R1, R2 & R3 are connected in parallel circuit?
A RT = R1 + R2 + R3
B RT=1/R1+1/R2+1/R3
C RT= 1/(R1+R2+R3)
D RT= 1/(1/R1+1/R2+1/R3)
Answer.
D RT= 1/(1/R1+1/R2+1/R3)
3. What is the name of the resistor?
A Metal film resistor
B Wire wound resistor
C Carbon - film resistor
D Carbon composition resistor
Answer.
B .Wire wound resistor
4 .What electrical quantities are related in Ohm’s law?
A Current, resistance and power
B Current, voltage and resistivity
C Current, voltage and resistance
D Voltage, resistance and current density
Answer.
C .Current, voltage and resistance
5 .What is the unit of resistivity?
A ohm / cm
B ohm / cm2
C ohm - metre
D ohm / metre
Answer.
C. ohm – metre
6 What is the formula for Quantity of electricity (Q) ?
A Current x Time
B Voltage x Current
C Current x Resistance
D Voltage x Resistance
Answer.
A .Current x Time
7 What is the S.I unit of specific resistance?
A Ohm/cm
B Ohm/metre2
C Ohm-metre
D Micro ohm/cm2
Answer.
C . Ohm-metre
8. What is the name of the wire joint?
A Aerial tap joint
B Knotted tap joint
C Duplex cross tap joint
D Double cross tap joint
Answer.
B Knotted tap joint
9. How many electrons are there in the valence shell of a copper atom?
A 1
B 2
C 8
D 18
Answer.
A .1
10. What is the unit of insulation resistance?
A Ohm
B Kilo ohm
C Milli ohm
D Mega ohm
Answer.
D. Mega ohm
11. What is the name of the joint?
A Married joint
B Scarfed joint
C Western union joint
D Britannia straight joint
Answer.
A Married joint
12. What does the number 1.40 represent if a stranded conductor is designated as 10 sq.mm cable of size 7/1.40?
A Area of cross section
B Radius of one conductor
C Diameter of all conductor
D Diameter of each conductor
Answer.
D .Diameter of each conductor
13 .What is the rating factor of cable provided with coarse excess current protection?
A 1.11
B 1.23
C 0.81
D 0.707
Answer.
B. 1.23
14 What is the unit for Quantity of electricity?
A Mho
B Coulomb
C Volt /second
D Ampere/second
Answer.
B Coulomb
15. What is the name of the soldering method?
A Dip soldering
B Soldering iron
C Soldering gun
D Soldering with flame
Answer.
C. Soldering gun
16. Which formula is used to calculate Electro Motive Force (EMF)?
A EMF = Potential difference – voltage drop
B EMF = Potential difference + voltage drop
C EMF = Potential difference + voltage drop/2
D EMF = Potential difference + 2 x voltage drop
Answer.
B .EMF = Potential difference + voltage drop
17. What is the current rating factor for close excess current protection of cable?
A 0.81
B 0.92
C 1.23
D 1.5
Answer.
C 1.23
18. What is the name of the soldering method?
A Dip soldering
B Soldering with blow lamp
C Soldering with soldering gun
D Temperature controlled soldering
Answer.
D .Temperature controlled soldering
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Bharat Skills Electrician Question Basic Electricity Question Level 2
1. What is the value of hot resistance of a bulb rated as 100W/250V?
A 31.25 ohm
B 31.25 ohm
C 312.50 ohm
D 625.00 ohm
Answer.
D 625.00 ohm
2. What is the change of resistance value of the conductor as its diameter is doubled?
A Increases to two times
B Decreases to four times
C Decrease to half of the value
D No change in value of resistance
Answer.
B Decreases to four times
3. Which material is having negative temperature co-efficient property?
A Mica
B Eureka
C Copper
D Manganin
Answer.
A Mica
4. Which is the application of series circuit?
A Voltmeter connection
B Lighting circuits in home
C Shunt resistor in ammeter
D Multiplier resistor of a voltmeter
Answer.
D Multiplier resistor of a voltmeter
5 What is the effect on opened resistor in series circuit?
A No effect in opened resistor
B Full circuit current will flow in opened resistor
C Total supply voltage will appear across the opened resistor
D No voltage will appear across the opened resistor
Answer.
C. Total supply voltage will appear across the opened resistor
6. What is the name of the resistor if its resistance value increase with increase in temperature?
A Varistors
B Sensistors
C Thermistors
D Light Dependent Resistor (LDR)
Answer
B Sensistors
7 .What is the voltage drop in resistor ‘R2’ in the series circuit?
A 5 volt
B 10 volt
C 15 volt
D 20 volt
Answer.
B .10 volt
8. Which is the example of series circuit?
A Fuse in circuit
B Voltmeter connection
C Electrical lamp in homes
D Shunt resistor in ammeter
Answer.
A Fuse in circuit
9 .What is the change in value of resistance of the conductor, if its cross section area is doubled?
A No change
B Decreases 2 times
C Increases 2 times
D Decreases 4 times
Answer
B Decreases 2 times
10. What is the resistance of Light Dependent Resistor (LDR), if the intensity of light is increased?
A Increases
B Decreases
C Remains same
D Becomes infinity
Answer.
B Decreases
11. What is the value of resistance in an open circuit?
A Zero
B Low
C High
D Infinity
Answer.
D. Infinity
12. Which is inversely proportional to the resistance of a conductor?
A Length
B Resistivity
C Temperature
D Area of cross section
Answer.
D .Area of cross section
13. Which type of soldering flux is used for soldering galvanised iron?
A Rosin
B Zinc chloride
C Sal ammonia
D Hydrochloric acid
Answer.
D. Hydrochloric acid
14 .Which method of soldering is used for quantity production and for tinning work?
A Dip soldering
B Soldering with a flame
C Soldering with soldering iron
D Soldering with soldering gun
Answer.
A Dip soldering
15. What is the effect of electric current on neon lamp?
A Heating effect
B Magnetic effect
C Chemical effect
D Gas ionization effect
Answer.
D Gas ionization effect
16. Which electrical device is the coarse excess current protection?
A Cartridge fuses
B Rewirable fuses
C Miniature Circuit Breaker (MCB)
D High Repturing Capacity (HRC) Fuses
Answer.
B Rewirable fuses
17 .Which type of joint is used for extending the length of conductor in over head lines?
A Scarfed joint
B Aerial tap joint
C Britannia “T” joint
D Western Union joint
Answer.
D Western Union joint
18. Which type of soldering flux is used for soldering aluminum conductors?
A Tallow
B Ker-al-lite
C Zinc chloride
D Sal ammonia resin
Answer.
B Ker-al-lite
19 .What is the effect on molten solder due to repeated melting?
A Tin content reduced
B Lead content reduced
C Prevent slug formation
D Uneven flowing in joints
Answer.
A Tin content reduced
20. Which type of wire joint is found in the junction box?
A Aerial tap joint
B Plain tap joint
C Rat tail joint
D Married joint
Answer.
C .Rat tail joint
21 What is the use of Britannia ‘T’ joint ?
A Extending the length of the lines
B Inside and outside wiring installation
C Mechanical stress not required on conductor
D Tapping the service connection from overhead lines
Answer.
D Tapping the service connection from overhead lines
22 Which type of soldering method is used for servicing and repairing work?
A Dip soldering
B Soldering with a flame
C Soldering with soldering gun
D Soldering with a soldering iron
Answer.
C .Soldering with soldering gun
23. What is the use of dipsoldering method?
A Soft soldering
B Piping and cable soldering work
C Soldering miniature components on PCB
D Soldering sensitive electric components
Answer.
C Soldering miniature components on PCB
24. Which type of joint is used in over head lines for high tensile strength?
A Scarfed joint
B Britannia ‘T’ joint
C Western union joint
D Britannia straight joint
Answer.
C Western union joint
25 .Which method of soldering is used for repairing the vehicle body?
A Dip soldering
B Soldering with flame
C Soldering with soldering iron
D Soldering with soldering gun
Answer.
B Soldering with flame
26 .What is the advantage of stranded conductor over solid conductor?
A Cost is less
B More flexible
C Less voltage drop
D More insulation resistance
Answer.
B More flexible
27. What is the current capacity of the 16 Amp. Cable, if it is protected by coarse excess current protection?
A 11A
B 13A
C 15A
D 18A
Answer.
B 13A
28 What is the disadvantage of solid conductor compared to stranded conductor?
A Less rigidity
B Less flexibility
C Low melting point
D Low mechanical strength
Answer.
B Less flexibility
29 Which type of joint is used in large single conductors with good appearance?
A Scarfed joint
B Britannia ‘T’ joint
C Western union joint
D Britannia straight joint
Answer.
A Scarfed joint
30 What is the cause for cold solder defect in soldering?
A Excessive heating
B Insufficient heating
C Incorrect use of solder
D High wattage soldering iron
Answer.
B Insufficient heating
31 Which conductors are used for distribution lines?
A Insulated fluxible conductors
B Insulated solid conductors
C Bare conductors
D Two core cable
Answer.
C Bare conductors
32 Calculate the resistance measured between point X and Y?
A 2 Ω
B 3 Ω
C 8 Ω
D 6 Ω
Answer.
B 3 Ω
33 Calculate the hot resistance of the 200W/250V lamp, if its cold resistance is 25 ohm?
A 625 ohm
B 312.5 ohm
C 227.5 ohm
D 156.2 ohm
Answer.
B 312.5 ohm
34 What is the effect of the circuit, if ‘ab’ points are shorted?
A Circuit resistance will be zero
B Same current will flow in all branches
C Supply voltage will exist in each branch
D Total circuit current is equal to each branch circuit current
Answer.
A Circuit resistance will be zero
Bharat Skills Electrician Question Basic Electricity Question Level 3
1. What is the reading of ohmmeter across opened ‘R2’ resistor?
A Indicate zero reading
B Indicate infinite resistance
C Total resistance value of the circuit
D Value of sum of the resistance of R1 and R3 only
Answer.
B Indicate infinite resistance
2. Calculate the value of unknown resistance ‘RDC’ in the Wheatstone bridge network, If PAB = 500Ω, QBC = 300Ω, SAo = 15Ω,at balanced condition.
A 12 Ω
B 9 Ω
C 6 Ω
D 3 Ω
Answer.
B 9 Ω
3. Calculate the value of resistance ‘R2’ in the parallel circuit.
A 2 Ω
B 4 Ω
C 6 Ω
D 8 Ω
Answer.
C. 6 Ω
4 Calculate the unknown resistance “RDC” in the Wheatstone bridge circuit, if PAB=400 ohms, QBC=200 ohms and SAD=12ohms at balanced condition.
A 4 Ω
B 6 Ω
C 8 Ω
D 12 Ω
Answer.
B. 6 Ω
5. Calculate the resistance value in R3 resistor.
A 4ohm
B 6ohm
C 8 ohm
D 12ohm
Answer.
D .12ohm
6 Calculate the voltage drop across the resistor ‘R4’ in the circuit?
A 48V
B 72V
C 80V
D 100V
Answer.
D 100V
7 What happens to the voltmeter, if it is connected as an ammeter?
A Low reading
B No deflection
C Meter burns out
D Overshoot deflection
Answer.
A Low reading
8 Why the soldering iron must be kept into a stand that not in use while soldering?
A It prevents burns and fire
B To control the excessive heat
C To save the time of soldering process
D To save the operator from electric shock
Answer.
A It prevents burns and fire
9. What is the effect of the parallel circuit if one branch is opened?
A Current will remain same
B Whole circuit will not function
C No current will flow in that branch only
D Voltage drop increase in the opened branch
Answer.
C No current will flow in that branch only
10 What is the reading of the voltmeter ‘V’?
A 0V
B 6V
C 9V
D 18V
Answer.
D. 18V
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