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ITI Previous Papers Electrician (NSQF)

PREVIOUS YEAR PAPER
TRADE NAMEElectrician (NSQF)
TRADE TYPEEngineering
YEAR1
EXAM DATE2025-04-17
EXAM TIME12:15:14:15
Question Paper MOCK TEST

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TRADE THEORY

What is the expansion of MCCB?

  1. Mini Case Circuit Breaker
  2. Moulded Case Circuit Breaker
  3. Miniature Case Circuit Breaker
  4. Micro Case Circuit Breaker

Which transformer is used to measure high voltage?

  1. Ignition transformers
  2. Potential transformers
  3. Pulse transformers
  4. Current transformers

Which type of wiring is preferred for workshop lighting?

  1. Batten wiring
  2. Surface metal conduit wiring
  3. Casing capping wiring
  4. Cleat wiring

Calculate the resistance value of the resistor by colour coding method.

  1. 37 x 104 Ω ± 5%
  2. 32 x 104 Ω ± 10%
  3. 23 x 103 Ω ± 5%
  4. 26 x 103 Ω ± 10%

Which electrical effect works on electric bells?

  1. Chemical effect
  2. Magnetic effect
  3. Gas ionization effect
  4. Heating effect

Which type of fire extinguisher is used for fire on electrical equipment?

  1. Foam type
  2. Halon type
  3. Stored pressure water type
  4. Gas cartridge water type

Which law states that the applied voltage in a closed circuit, is equal to the sum of the voltage drops?

  1. Kirchhoff’s first law
  2. Laws of resistance
  3. Kirchhoff’s second law
  4. Ohm’s law

What is the unit of capacitance?

  1. Henry
  2. Coulomb
  3. Farad
  4. Mho

What is the term refers the luminous flux given by light source per unit solid angle?

  1. Luminous flux
  2. Luminous intensity
  3. Lumen
  4. Illuminance

What is the relation between the line voltage (VL) and phase voltage (Vp) in star connected system?

What is the type of the fuse as shown in the figure?

  1. Diazed screw type cartridge fuse
  2. High rupturing capacity fuse
  3. Rewirable kit-kat fuses
  4. Ferrule contact cartridge fuse

Which loss of the transformer is determined by the short circuit test?

  1. Windage loss
  2. Eddy current loss
  3. Copper loss
  4. Hysteresis loss

What is the ratio between the peak value and RMS value?

  1. Effective value
  2. RMS factor
  3. Form factor
  4. Peak factor

What is the function of bimetallic strip in the MCB ?

  1. Over load protection
  2. Short circuit protection
  3. Over voltage protection
  4. Earth leakage protection

What is the function of magnetron tube in a microwave oven?

  1. Amplifies the microwave signal
  2. Converts the microwave energy to electrical energy
  3. Oscillate and produce the cooking frequency
  4. Changes the polarity every half cycle

Which method of soldering is used for repairing the vehicle body?

  1. Soldering with flame
  2. Machine soldering
  3. Soldering with soldering iron
  4. Dip soldering

What is the function of soft iron core in a moving coil instrument?

  1. Provides meter with maximum sensitivity
  2. Controls the needle’s movement
  3. Provide uniform distribution of magnetic flux in air gap
  4. Strengthens the deflection force

Which is determined by the crackle test of transformer oil?

  1. Dielectric strength
  2. Moisture
  3. Acidity
  4. Viscosity

Which part is losing its weight during the electrolysis?

  1. Anode
  2. Cathode
  3. Separator
  4. Electrolyte

Which formula is derived from the Faraday’s law of electrolysis?

  1. M = Z/ I t
  2. M = Z t/ I
  3. M = I t /Z
  4. M = Z I t

What is the effect of the electrolytic capacitor, if open circuit fault occurs?

  1. It will function normally
  2. It will not function
  3. It will burst at once
  4. It will become leaky

What is the name of the safety sign as shown in the figure?

  1. Mandatory sign
  2. Warning sign
  3. Prohibition sign
  4. Information sign

Which type of relay can be operated on both A.C and D.C supply?

  1. Dry reed relay
  2. Thermal relay
  3. Ferred relay
  4. Impulse relay

What is the purpose of the phase sequence meter?

  1. To indicate the phase sequence of 3 phase system
  2. To control the speed of 3 phase motor
  3. To protect the motor against short circuit fault
  4. To measure the voltage of 3 phase system

What is the formula to calculate the three phase power (P) if the line voltage is (VL), line current is (IL) and phase angle is (‘θ’)?

  1. P = 3 VL IL Sinθ
  2. P = 3 VL IL Cosθ

What will happen if a resistor is opened in a series circuit?

  1. Full current will flow through the opened resistor
  2. Total supply voltage will appear across the opened resistor
  3. No voltage will appear across the opened resistor
  4. More power loss in the opened resistor

Which type of instrument is used with air friction damping?

  1. Dynamo meter type instrument
  2. Moving coil instrument
  3. Moving iron instrument
  4. Induction type instrument

What is the purpose of the bedding insulation in the U.G. cable?

  1. Protect the metallic sheath against corrosion
  2. Protect the cable from mechanical injury
  3. Protect the cable from moisture and gases
  4. Protect armouring from atmospheric condition

What is the permissible leakage current in domestic wiring installation?

  1. 1/500 x Full load current
  2. 1/50 x Full load current
  3. 1/5000 x Full load current
  4. 1/5 x Full load current

Why the damping force is required in a moving coil instrument?

  1. Makes the needle movement faster
  2. Brings the needle to its zero position
  3. Bring the needle to rest at final value
  4. Helps the deflecting force to act fast

Why the A.C is used in electrodes of earth resistance tester to measure the earth resistance?

  1. Avoid electrolytic emf interference
  2. Decrease the voltage drop
  3. Increase the voltage drop
  4. Regulate the current

How the capacity of the batteries are specified?

  1. Volt
  2. Watt
  3. Volt Ampere
  4. Ampere hour

What is the total inductance if 3 inductors (L1, L2 and L3) are connected in series?

  1. LT = L1 + L2 + L3
  3. LT = L1 x L2 x L3

What is the value of phase current if the line current is 20 Amp in delta connection?

  1. 20 A
  2. 15.6 A
  3. 10 A
  4. 11.55 A

Which formula is used to calculate the power of a DC circuit?

  1. Voltage x time
  2. Current x resistance
  3. Current x voltage
  4. Voltage x resistance

How many electrons are there in the third shell of the copper atom?

  1. 18
  2. 29
  3. 8
  4. 13

What is the main advantage of coiled coil lamp?

  1. Low power consumption
  2. High melting point
  3. Low operating voltage
  4. Higher light output

Why the ohmmeter is graduated with non-linear scale?

  1. Resistance is inversely proportional to the square of current
  2. Voltage is directly proportional to the square of the current
  3. Current is inversely proportional to resistance
  4. Voltage is directly proportional to resistance

WORKSHOP CALCULATION AND SCIENCE

Convert 0.456 decimal fraction into percentage?

  1. 4.56%
  2. 0.456%
  3. 45.6%
  4. 0.0456%

What are the two classifications of system of units?

  1. British and Metric
  2. Metric and International
  3. Gravitational and non-gravitational
  4. Fundamental and derived

How many millimetres are there in 1 inch?

  1. 2.45 mm
  2. 24.5 mm
  3. 25.4 mm
  4. 2.54 mm

Convert decimal 0.000659 to fraction?

What is called mass per unit volume of a substances?

  1. Mass
  2. Weight
  3. Volume
  4. Density

What is the square root of 529?

  1. 43
  2. 23
  3. 33
  4. 13

ENGINEERING DRAWING

Which single stroke inclined letter 'A' is correct as per IS standard?

Identify the name of the triangle?

  1. Isosceles triangle
  2. Scalene triangle
  3. Equilateral triangle
  4. Right angle triangle

Identify the name of set square?

  1. 30o set square
  2. 45o set square
  3. 15o set square
  4. 60o set square

Which title block position is correct as standard practice?

Identify the line 'b'?

  1. Termination of dimension line
  2. Leader line
  3. Extension line
  4. Dimension line

Identify the name of tool?

  1. Combination spanner
  2. Ring spanner
  3. Open end spanner
  4. Adjustable spanner

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