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Question for ISRO SAC Technician B - Quiz / Questions / MCQ in English

Last Update on : October 13, 2026

Duration: 90 · Questions: 80 · Max Marks: 80

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To boost your performance in ISRO SAC Technician B exam, practice each question regularly and with focus. Every question tests your subject understanding, so solve them one at a time. Taking a quiz improves your speed and accuracy. Practicing topic-wise MCQs. Students benefit greatly from reviewing questions with answer keys, which help clarify concepts and strengthen Questions knowledge for success in ISRO SAC Technician B exams.

Latest ISRO SAC Technician B Exam Question (Objective Questions), MCQ in English

Subjects : Technical Subject (Electronics Mechanic)

Question Bank ISRO SAC Technician B Exam (Electronics Mechanic) - English

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Technical Subject (Electronics Mechanic)

Q 1 :
What is the primary use of a flat file in electronics work?
  1. A.Smoothing metal surfaces
  2. B.Cutting wires
  3. C.Drilling holes
  4. D.Soldering components
Q 2 :
Which tool is used for cutting metal sheets in basic metalwork?
  1. A.Pliers
  2. B.Screwdriver
  3. C.Hacksaw
  4. D.Soldering iron
Q 3 :
What is the function of a center punch in electronics fabrication?
  1. A.To strip wires
  2. B.To cut metal
  3. C.To tighten screws
  4. D.To mark a point for drilling
Q 4 :
Which tool is used to remove insulation from wires?
  1. A.Hacksaw
  2. B.Wire stripper
  3. C.File
  4. D.Drill
Q 5 :
What is the purpose of a bench vise in electronics work?
  1. A.To solder wires
  2. B.To measure voltage
  3. C.To hold components securely
  4. D.To cut cables
Q 6 :
Which tool is used for precision cutting of small metal parts?
  1. A.Hacksaw
  2. B.File
  3. C.Jeweler’s saw
  4. D.Drill
Q 7 :
What is the use of a tap and die set in electronics fabrication?
  1. A.To measure resistance
  2. B.To create threads in metal
  3. C.To strip wires
  4. D.To solder components
Q 8 :
Which tool is used to make small holes in a PCB?
  1. A.Hacksaw
  2. B.Hand drill
  3. C.Screwdriver
  4. D.Pliers
Q 9 :
What is the function of needle-nose pliers in electronics?
  1. A.To cut large cables
  2. B.To smooth surfaces
  3. C.To bend and shape small wires
  4. D.To drill holes
Q 10 :
Which tool is used to tighten or loosen screws in electronics assembly?
  1. A.File
  2. B.Screwdriver
  3. C.Hacksaw
  4. D.Wire stripper
Q 11 :
What is the purpose of a ball-peen hammer in metalwork?
  1. A.To strip wires
  2. B.To shape or rivet metal
  3. C.To measure voltage
  4. D.To solder components
Q 12 :
Which tool is used for filing rough edges on a metal chassis?
  1. A.Hacksaw
  2. B.Drill
  3. C.File
  4. D.Pliers
Q 13 :
What is the primary use of a combination pliers in electronics?
  1. A.To smooth surfaces
  2. B.To cut and grip wires
  3. C.To drill holes
  4. D.To measure current
Q 14 :
Which tool is used to create precise holes in metalwork?
  1. A.Hacksaw
  2. B.Drill press
  3. C.File
  4. D.Screwdriver
Q 15 :
What is the function of a wire cutter in electronics?
  1. A.To strip insulation
  2. B.To bend wires
  3. C.To cut wires to length
  4. D.To solder components
Q 16 :
What is the primary difference between AC and DC?
  1. A.DC is used in households, AC in electronics
  2. B.DC changes direction, AC flows in one direction
  3. C.AC is used in batteries, DC in power lines
  4. D.AC changes direction, DC flows in one direction
Q 17 :
Which type of cable is used for high-voltage AC transmission?
  1. A.Power cable
  2. B.Coaxial cable
  3. C.Ribbon cable
  4. D.Twisted pair cable
Q 18 :
What is the purpose of insulation in electrical cables?
  1. A.To increase conductivity
  2. B.To increase resistance
  3. C.To reduce cable weight
  4. D.To prevent electrical shock and short circuits
Q 19 :
Which tool is used to test the continuity of an electrical cable?
  1. A.Wire stripper
  2. B.Oscilloscope
  3. C.Screwdriver
  4. D.Multimeter
Q 20 :
What is the unit of measurement for AC frequency?
  1. A.Volts
  2. B.Amperes
  3. C.Ohms
  4. D.Hertz
Q 21 :
Which cable specification indicates the maximum current it can carry?
  1. A.Voltage rating
  2. B.Insulation thickness
  3. C.Ampacity
  4. D.Cable length
Q 22 :
What is the purpose of a cable’s conductor?
  1. A.To provide insulation
  2. B.To carry electrical current
  3. C.To reduce resistance
  4. D.To prevent short circuits
Q 23 :
Which type of cable is used for data transmission in electronics?
  1. A.Power cable
  2. B.Armored cable
  3. C.Single-core cable
  4. D.Coaxial cable
Q 24 :
What is the standard frequency of AC power in India?
  1. A.60 Hz
  2. B.50 Hz
  3. C.100 Hz
  4. D.120 Hz
Q 25 :
Which test ensures an electrical cable is free from breaks?
  1. A.Voltage test
  2. B.Resistance test
  3. C.Continuity test
  4. D.Current test
Q 26 :
What is the purpose of a cable’s shielding?
  1. A.To reduce electromagnetic interference
  2. B.To increase current flow
  3. C.To increase resistance
  4. D.To provide insulation
Q 27 :
Which material is commonly used as a conductor in electrical cables?
  1. A.Rubber
  2. B.Plastic
  3. C.Copper
  4. D.Glass
Q 28 :
What is the function of a multimeter in cable testing?
  1. A.To cut cables
  2. B.To solder wires
  3. C.To strip insulation
  4. D.To measure voltage, current, and resistance
Q 29 :
Which cable specification indicates the maximum voltage it can withstand?
  1. A.Ampacity
  2. B.Voltage rating
  3. C.Conductor size
  4. D.Insulation type
Q 30 :
What is the purpose of twisting wires in a twisted pair cable?
  1. A.To increase resistance
  2. B.To reduce conductivity
  3. C.To increase cable weight
  4. D.To reduce electromagnetic interference
Q 31 :
What is the primary function of a single range voltmeter?
  1. A.To measure current
  2. B.To measure resistance
  3. C.To measure voltage
  4. D.To check continuity
Q 32 :
Which meter is used to check for an open circuit?
  1. A.Ammeter
  2. B.Voltmeter
  3. C.Continuity tester
  4. D.Ohmmeter
Q 33 :
What is the unit of measurement for a single range ammeter?
  1. A.Volts
  2. B.Amperes
  3. C.Ohms
  4. D.Hertz
Q 34 :
How is a single range voltmeter connected in a circuit?
  1. A.In parallel
  2. B.In series
  3. C.In open circuit
  4. D.In short circuit
Q 35 :
What does a continuity tester indicate when the circuit is complete?
  1. A.No signal
  2. B.High resistance
  3. C.A beep or light
  4. D.Zero voltage
Q 36 :
Which meter is used to measure current in a circuit?
  1. A.Voltmeter
  2. B.Ammeter
  3. C.Ohmmeter
  4. D.Continuity tester
Q 37 :
How is a single range ammeter connected in a circuit?
  1. A.In parallel
  2. B.In series
  3. C.In open circuit
  4. D.In short circuit
Q 38 :
What is the purpose of a single range ohmmeter?
  1. A.To measure resistance
  2. B.To measure voltage
  3. C.To measure current
  4. D.To check continuity
Q 39 :
Which precaution is taken when using a single range voltmeter?
  1. A.Connect in series
  2. B.Disconnect the power
  3. C.Short the probes
  4. D.Select the correct voltage range
Q 40 :
What does a zero reading on a continuity tester indicate?
  1. A.Open circuit
  2. B.Short circuit
  3. C.High resistance
  4. D.Low voltage
Q 41 :
What is the positive terminal of a cell called?
  1. A.Anode
  2. B.Separator
  3. C.Electrolyte
  4. D.Cathode
Q 42 :
Which instrument is used to measure the voltage of a battery?
  1. A.Ammeter
  2. B.Voltmeter
  3. C.Ohmmeter
  4. D.Continuity tester
Q 43 :
What is the unit of measurement for battery capacity?
  1. A.Ampere-hours
  2. B.Amperes
  3. C.Volts
  4. D.Ohms
Q 44 :
Which type of battery is rechargeable?
  1. A.Alkaline
  2. B.Zinc-carbon
  3. C.Lithium-ion
  4. D.Mercury
Q 45 :
What is the purpose of a battery’s electrolyte?
  1. A.To insulate the terminals
  2. B.To facilitate ion movement
  3. C.To increase resistance
  4. D.To reduce voltage
Q 46 :
Which test checks a battery’s readiness for use?
  1. A.Continuity test
  2. B.Resistance test
  3. C.Load test
  4. D.Short circuit test
Q 47 :
What is the nominal voltage of a single AA alkaline cell?
  1. A.1.2V
  2. B.1.5V
  3. C.3.7V
  4. D.9V
Q 48 :
Which type of battery is used in electric vehicles?
  1. A.Lead-acid
  2. B.Alkaline
  3. C.Zinc-carbon
  4. D.Mercury
Q 49 :
What is the negative terminal of a cell called?
  1. A.Electrolyte
  2. B.Cathode
  3. C.Anode
  4. D.Separator
Q 50 :
Which device is used to charge a rechargeable battery?
  1. A.Battery charger
  2. B.Multimeter
  3. C.Oscilloscope
  4. D.Function generator

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