Pak Navy Ordnance Branch Tests MCQs

Introduction: Preparing for Navy Ordnance Branch Tests

If you’re looking to join the prestigious Pak Navy through the Navy Ordnance Branch, preparing for the initial tests is a crucial step toward securing your future. The Navy Ordnance Branch tests are collected to pass the students in the initial tests and ensure they meet the high standards of the Pak Navy. Luckily, you can now prepare for these tests free of cost with access to past papers that reflect the actual exam format. These resources will help you understand the test pattern, sharpen your skills, and boost your confidence. Whether you’re preparing for the written exam or practical assessments, our comprehensive guide on the Navy Ordnance Branch tests will provide you with the tools you need to succeed.

Paper Pattern for Pak Navy Ordnance Branch Tests

If you want to prepare initial tests of Pak Navy Ordnance Branch Tests then it has two types of paper,

  1. Intelligence Tests (It includes verbal and Non-Verbal Intelligence Tests)
  2. Academic Test (It includes purely subject related mcqs against which degree you have applied.

In intelligence tests students are to face 84 verbal intelligence tests in 30 minutes and 64 Non verbal intelligence tests in 25 to 30 minutes, depends on policy.

Pak Navy Ordnance Branch Tests MCQs with Answers

Most important Navy Ordnance Branch tests are given below.

Q1: What is the unit of electrical resistance?
(a) Ampere
(b) Ohm
(c) Watt
(d) Volt
Answer: (b) Ohm

Q2: Which of the following is the main function of a transformer?
(a) Change voltage
(b) Store energy
(c) Increase current
(d) Increase power
Answer: (a) Change voltage

Q3: In an AC circuit, what does the reactance depend on?
(a) Resistance
(b) Inductance and capacitance
(c) Voltage
(d) Power
Answer: (b) Inductance and capacitance

Q4: What is the formula to calculate the power in an AC circuit?
(a) P = VI
(b) P = Vยฒ/R
(c) P = IยฒR
(d) P = VI cos(ฮธ)
Answer: (d) P = VI cos(ฮธ)

Q5: What type of current is used in transformers?
(a) Direct current
(b) Alternating current
(c) Pulsating current
(d) None of the above
Answer: (b) Alternating current

Q6: Which of the following materials has the highest thermal conductivity?
(a) Wood
(b) Steel
(c) Copper
(d) Air
Answer: (c) Copper

Q7: What is the unit of work done in mechanical systems?
(a) Joule
(b) Newton
(c) Watt
(d) Kilowatt
Answer: (a) Joule

Q8: In thermodynamics, what is the first law of thermodynamics?
(a) Energy can neither be created nor destroyed
(b) Heat flows from cold to hot
(c) Entropy always increases
(d) Energy is destroyed in every process
Answer: (a) Energy can neither be created nor destroyed

Q9: Which of the following is a type of power transmission in mechanical systems?
(a) Direct current
(b) Chain drive
(c) Diode
(d) Capacitor
Answer: (b) Chain drive

Q10: What is the main function of a heat exchanger in mechanical systems?
(a) Absorb heat
(b) Transfer heat between two fluids
(c) Convert heat to electrical energy
(d) Increase temperature of fluid
Answer: (b) Transfer heat between two fluids

Q11: Which of the following systems is used in Mechatronics?
(a) Control systems
(b) Mechanical systems
(c) Electrical systems
(d) All of the above
Answer: (d) All of the above

Q12: In a mechatronic system, what is the main purpose of sensors?
(a) To measure temperature
(b) To convert mechanical energy into electrical energy
(c) To detect and measure physical quantities
(d) To regulate power
Answer: (c) To detect and measure physical quantities

Q13: What is a primary characteristic of a mechatronic system?
(a) Use of mechanical and electrical components only
(b) Integration of mechanical, electrical, and computing elements
(c) Use of hydraulic power
(d) Use of chemical reactions
Answer: (b) Integration of mechanical, electrical, and computing elements

Q14: What does PLC stand for in mechatronics?
(a) Programmable Logic Controller
(b) Pneumatic Logic Circuit
(c) Phase Lock Controller
(d) Power Line Carrier
Answer: (a) Programmable Logic Controller

Q15: What is the key function of actuators in mechatronic systems?
(a) Sensing the environment
(b) Converting electrical signals to physical movement
(c) Storing energy
(d) Processing data
Answer: (b) Converting electrical signals to physical movement

Q16: Which of the following is used to store electrical energy in an electronic circuit?
(a) Transistor
(b) Capacitor
(c) Diode
(d) Resistor
Answer: (b) Capacitor

Q17: What is the main purpose of a diode in electronic circuits?
(a) Amplify current
(b) Regulate voltage
(c) Allow current to flow in one direction only
(d) Store energy
Answer: (c) Allow current to flow in one direction only

Q18: Which of the following is NOT a type of semiconductor material?
(a) Silicon
(b) Germanium
(c) Copper
(d) Gallium
Answer: (c) Copper

Q19: In a digital circuit, what does a logic gate perform?
(a) Storage of data
(b) Conversion of analog to digital signals
(c) A specific logical operation on one or more binary inputs
(d) Amplification of signals
Answer: (c) A specific logical operation on one or more binary inputs

Q20: What is the main purpose of an op-amp in electronics?
(a) To amplify weak signals
(b) To store energy
(c) To switch signals
(d) To regulate voltage
Answer: (a) To amplify weak signals

Navy Ordnance Branch Tests for Initial Tests of SSC

Most famous and current past papers of Navy Ordnance Branch tests.

Q1: What is the unit of capacitance?
(a) Henry
(b) Farad
(c) Volt
(d) Ohm
Answer: (b) Farad

Q2: Which material is commonly used as an insulator in electrical cables?
(a) Copper
(b) Aluminum
(c) Rubber
(d) Iron
Answer: (c) Rubber

Q3: What is the primary purpose of a fuse in an electrical circuit?
(a) Regulate current
(b) Store energy
(c) Prevent overcurrent damage
(d) Increase voltage
Answer: (c) Prevent overcurrent damage

Q4: In a synchronous motor, the rotor speed is determined by:
(a) The load
(b) The number of poles in the motor
(c) The voltage supply
(d) The temperature
Answer: (b) The number of poles in the motor

Q5: What is the effect of increasing the resistance in a series circuit?
(a) Current decreases
(b) Voltage increases
(c) Power increases
(d) Current remains unaffected
Answer: (a) Current decreases

Q6: Which device is used to convert alternating current (AC) to direct current (DC)?
(a) Transformer
(b) Rectifier
(c) Inductor
(d) Capacitor
Answer: (b) Rectifier

Q7: Which principle does a hydraulic press operate on?
(a) Bernoulli’s principle
(b) Archimedes’ principle
(c) Pascalโ€™s principle
(d) Newtonโ€™s law
Answer: (c) Pascalโ€™s principle

Q8: Which of the following is most commonly used for mechanical power transmission?
(a) Belts
(b) Gears
(c) Shafts
(d) Pulleys
Answer: (b) Gears

Q9: In a four-stroke engine, how many strokes are required to complete one cycle?
(a) One
(b) Two
(c) Three
(d) Four
Answer: (d) Four

Q10: The purpose of a flywheel in mechanical systems is to:
(a) Store rotational energy
(b) Increase friction
(c) Convert kinetic energy to heat
(d) Regulate temperature
Answer: (a) Store rotational energy

Q11: What type of signal is commonly used for communication in mechatronic systems?
(a) Analog
(b) Digital
(c) Both analog and digital
(d) None of the above
Answer: (c) Both analog and digital

Q12: Which component is used to measure the flow of current in a circuit?
(a) Capacitor
(b) Voltmeter
(c) Ammeter
(d) Thermistor
Answer: (c) Ammeter

Q13: Which system is used to regulate the speed of an electric motor?
(a) Thermal system
(b) Mechanical system
(c) Electronic control system
(d) Hydraulic system
Answer: (c) Electronic control system

Q14: In a pneumatic system, what is typically used as the driving force?
(a) Air pressure
(b) Electrical current
(c) Hydraulic fluid
(d) Magnetic field
Answer: (a) Air pressure

Q15: Which component in an electronic circuit is used for switching?
(a) Resistor
(b) Transistor
(c) Capacitor
(d) Inductor
Answer: (b) Transistor

Q16: What is the primary function of an inverter in an electronic system?
(a) Convert DC to AC
(b) Increase voltage
(c) Store energy
(d) Regulate current
Answer: (a) Convert DC to AC

Q17: In a mechanical system, what is the purpose of a bearing?
(a) Store energy
(b) Reduce friction
(c) Transfer power
(d) Control temperature
Answer: (b) Reduce friction

Q18: What is the effect of increasing the supply voltage on the current in a resistive circuit?
(a) The current decreases
(b) The current increases
(c) The current remains unaffected
(d) The voltage drops
Answer: (b) The current increases

Q19: What is the purpose of a rectifier circuit in an electronic system?
(a) Convert DC to AC
(b) Regulate voltage
(c) Convert AC to DC
(d) Amplify signals
Answer: (c) Convert AC to DC

Q20: Which of the following is an example of a mechanical power transmission system?
(a) Electric motor
(b) Hydraulic pump
(c) Belt and pulley
(d) Transistor circuit
Answer: (c) Belt and pulley

Navy Ordnance Branch Tests with Answers for Initial Academic Tests

Most repeated Navy Ordnance Branch tests are given to pass the initial tests of Pak Navy.

Q1: Which of the following is a property of an ideal transformer?
(a) Zero losses
(b) Infinite efficiency
(c) Constant voltage output
(d) All of the above
Answer: (d) All of the above

Q2: In a three-phase AC circuit, what is the phase difference between the three voltages?
(a) 180ยฐ
(b) 120ยฐ
(c) 90ยฐ
(d) 60ยฐ
Answer: (b) 120ยฐ

Q3: Which of the following is a function of a rectifier in a power supply circuit?
(a) Increase voltage
(b) Convert AC to DC
(c) Filter noise
(d) Control current
Answer: (b) Convert AC to DC

Q4: In an electric motor, what is the function of the commutator?
(a) Increase speed
(b) Change direction of current
(c) Reduce wear on brushes
(d) Regulate voltage
Answer: (b) Change direction of current

Q5: What does the Faradayโ€™s law of electromagnetic induction state?
(a) The current is proportional to voltage
(b) A change in magnetic field induces an electromotive force
(c) Voltage is inversely proportional to resistance
(d) Energy is conserved in the system
Answer: (b) A change in magnetic field induces an electromotive force

Q6: Which of the following is used to increase or decrease the voltage in an AC circuit?
(a) Capacitor
(b) Inductor
(c) Transformer
(d) Resistor
Answer: (c) Transformer

Q7: What is the efficiency of a machine that outputs 500 W of power and takes in 700 W of power?
(a) 50%
(b) 70%
(c) 85%
(d) 100%
Answer: (b) 70%

Q8: What type of engine uses both fuel and compressed air for power generation?
(a) Electric engine
(b) Internal combustion engine
(c) Hybrid engine
(d) Pneumatic engine
Answer: (c) Hybrid engine

Q9: Which mechanical property is most closely related to the ability of a material to return to its original shape after deformation?
(a) Ductility
(b) Hardness
(c) Elasticity
(d) Toughness
Answer: (c) Elasticity

Q10: In a hydraulic system, what does Pascalโ€™s law state?
(a) The force applied is inversely proportional to the area
(b) The pressure is the same throughout the fluid in an enclosed system
(c) Force is proportional to mass
(d) Fluid moves from lower to higher pressure areas
Answer: (b) The pressure is the same throughout the fluid in an enclosed system

Q11: What is the primary function of an actuator in a mechatronic system?
(a) Convert digital signals to mechanical motion
(b) Measure environmental conditions
(c) Process data
(d) Store energy
Answer: (a) Convert digital signals to mechanical motion

Q12: Which of the following is a commonly used material for making the housing of mechatronic systems?
(a) Plastic
(b) Aluminum
(c) Glass
(d) Rubber
Answer: (b) Aluminum

Q13: What is the purpose of the feedback loop in a control system?
(a) To generate energy
(b) To stabilize the system and maintain desired output
(c) To enhance the power
(d) To convert analog signals to digital
Answer: (b) To stabilize the system and maintain desired output

Q14: Which of the following sensors is most commonly used to measure temperature?
(a) Pressure sensor
(b) Proximity sensor
(c) Thermocouple
(d) Light sensor
Answer: (c) Thermocouple

Q15: What is a key feature of an industrial robot used in mechatronics?
(a) Ability to perform repetitive tasks with precision
(b) Ability to generate electricity
(c) Ability to create data backups
(d) Ability to store large amounts of data
Answer: (a) Ability to perform repetitive tasks with precision

Q16: What is the function of a flywheel in a mechanical system?
(a) Regulate temperature
(b) Store energy to smooth out fluctuations
(c) Reduce noise
(d) Increase pressure
Answer: (b) Store energy to smooth out fluctuations

Q17: Which of the following components is used to store electrical energy in an electric circuit?
(a) Inductor
(b) Capacitor
(c) Resistor
(d) Diode
Answer: (b) Capacitor

Q18: Which of the following devices is used to convert electrical energy into mechanical energy?
(a) Motor
(b) Generator
(c) Rectifier
(d) Transformer
Answer: (a) Motor

Q19: What is the basic function of a voltage regulator in an electronic circuit?
(a) To increase voltage
(b) To store voltage
(c) To maintain a constant voltage level
(d) To filter noise
Answer: (c) To maintain a constant voltage level

Q20: In a mechatronic system, what is the purpose of a microcontroller?
(a) To store data
(b) To control the operation of sensors and actuators
(c) To convert power from AC to DC
(d) To amplify signals
Answer: (b) To control the operation of sensors and actuators

Online Practice of Electrical Engineering in Navy Ordnance Branch tests

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Electrical Engineering Tests Quiz

1 / 25

The noise resulting from the vibration of lamination set by magnetic forceย  is termed as;-

2 / 25

A DC series motor is that whichย  has its fieldย  winding:-

3 / 25

__________ is the SCR terminals:-

4 / 25

The output voltage of a silver oxide cell is:-

5 / 25

For measuring current at high frequency we should use:-

6 / 25

Instantaneous of sinusoidal AC current at 45 degree is called:-

7 / 25

The chemical used in breatherย  forย  transformer should have the quality of:-

8 / 25

An ideal transformer has infiniteย  value of primary and secondary inductances. The statement is:-

9 / 25

The ' Crawling ; in anย  induction motor is caused by:-

10 / 25

The core used in high frequency transformer is usually:-

11 / 25

A generating voltmeter is a variable capacitor electrostatic voltage generator:-

12 / 25

Series capacitors on transmissionย  lines are of little useย  when the loadย  VAR requirement is:-

13 / 25

Thermonic emission occurs in:-

14 / 25

Steel wire is used as:-

15 / 25

Which one is not a primary cell:-

16 / 25

High temperature hydrocarbons have:-

17 / 25

For starting a DC motorย  a starter is required becauseย  ย it limits the startingย  current to be safe value:-

18 / 25

Thermonicย  emissionย  occurs in:-

19 / 25

When DC motorย  is preferred for elevator :-

20 / 25

In ACSRย  conductors, the insulation betweenย  aluminiumย  and steel conductors is :-

21 / 25

Star transformerย  workย  satisfactorily when :-

22 / 25

If the carrierย  of a 100% modulated AM waveย  is suppressed the %age of power:-

23 / 25

The ideal loadย  factor should be:-

24 / 25

The charging currentย  drawn by the cable ___________;-

25 / 25

___________ is the most commonly used for makingย  magneticย  recording tape:-

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Online Practice of Past Questions of Mechanical Engineering

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Mechanical Engineering Tests Quiz

1 / 25

Coefficient of friction is theย  ratio of limitingย  ย  frictionย  ย and normal reaction:-

2 / 25

An auger isย  a planning tool ;-

3 / 25

Which property of airย  doesย  ย not increase withย  ย rise in temperature ;-

4 / 25

Theย  rated life ofย  aย  ย bearingย  varies :-

5 / 25

Thermal conductivityย  of woodย  ย depends on ;-

6 / 25

Maximum deliveryย  pressureย  is a rotaryย  air compressorย  ย  is of the order of :-

7 / 25

Which of the following is least symmetrical;-

8 / 25

Theย  measurementย  ofย  fractioned power by Willansย  lineย  isย  applicableย  toย  si engineย  at particular speed :-

9 / 25

Which indicates multigrade oil;-

10 / 25

Volumetric efficiency isย  the measure ofย  breathingย  capacity of an engine :-

11 / 25

Lowerย  friction meansย  moreย  brakeย  power :-

12 / 25

A pump transfersย  ย  input mechanical energyย  ย  of an engine intoย  :-

13 / 25

The frictional power isย  ;-

14 / 25

A non dimensionalย  number generallyย  ย associatedย  with naturalย  ย convectionย  heat transfer isย  ;-

15 / 25

The purpose of transmission in anย  automobile is ;-

16 / 25

Which designย  considerationย  deal withย  appearanceย  of the product ;-

17 / 25

Which is not the unit of energy -

18 / 25

In a typicalย  ย mediumย  speedย  4-strokeย  ย cycleย  ย dieselย  ย engineย  the inlet valveย  opens ateย  ย __________ beforeย  top deadย  center ;-

19 / 25

Morse test is only applicable to :-

20 / 25

A flat surfaceย  can be producedย  by a latheย  machineย  , if the cuttingย  tool moves :-

21 / 25

The unit of mass inย  SI unitย  ย isย  ;-

22 / 25

SI engineย  ย areย  ย qualityย  governedย  ย engine ;-

23 / 25

What are the numbersย  of turningย  ย pairsย  in aย  ย sliderย  crankย  mechanism :-

24 / 25

Euler's dimensionlessย  ย numberย  ย relates pressure force and :-

25 / 25

The operation of forcingย  ย additionalย  ย air underย  pressureย  in the engineย  ย cylinderย  ย  is known as ;-

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Online Practice of Past Questions of Electronics MCQs

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Electronics Engineering Tests Quiz

1 / 25

Random thingsย  in aย  communication systemย  are :-

2 / 25

Permeability in a magnetic circuit corresponds to __________ in an electric circuit:-

3 / 25

An SCRย  is made upย  ย of silicon because siliconย  hasย  ย small leakageย  current thanย  germanium :-

4 / 25

Aย  signalย  can beย  recoveredย  ย from itsย  sampleย  by using :-

5 / 25

Theย  region of semiconductorย  which isย  lightlyย  dopedย  is known as :-

6 / 25

Which one is a unipolar device:-

7 / 25

Powerย  amplifierย  isย  providedย  withย  cross overย  distortion compensation:-

8 / 25

How many coulombsย  ofย  chargeย  flowย  throughย  a circuitย  carryingย  aย  current ofย  10ย  A in 1ย  minute :-

9 / 25

Stopless speedย  control ofย  induction motorย  isย  possibleย  byย  ___________ method :-

10 / 25

The heater filament of a vacuum tube is usually supplied with ac voltage for heating:-

11 / 25

The transistor is usually encapsuled in:-

12 / 25

The cascaded amplifier is often used in ICs is:-

13 / 25

Dielectric strength ___________ with increasing thickness:-

14 / 25

Resistivelyย  generatedย  inferenceย  arisesย  through incorrect :-

15 / 25

The work function for the oxide coated emitter material is:-

16 / 25

In BJT,ย  switchingย  lossesย  occurs _________;-

17 / 25

Latchingย  current isย  related to turn off processย  of theย  device ;-

18 / 25

The efficiencyย  of an induction motorย  can beย  expectedย  toย  be nearly :-

19 / 25

Matrixย  ย whichย  doesย  notย  have anย  inverseย  byย  solvingย  it ,ย  is classifiedย  as ____________:-

20 / 25

Which one is the fastest switching device:-

21 / 25

Theย  inputย  functionsย  areย  forย  what purpose ;-

22 / 25

Mica capacitors are characterized by all of the following except:-

23 / 25

pH value ofย  venousย  blood is :-

24 / 25

Electronsย  emittedย  fromย  ย hot metalย  surfacesย  isย  aย  process of :-

25 / 25

The power factorย  of an inductionย  motorย  under no loadย  conditions will be closerย  to ;-

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Online Practice of Mechatronics Engineering MCQs

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Mechatronics Engineering Tests Quiz

1 / 25

When did theย  ย digitalย  ย manufacturingย  ย conceptย  ย becameย  prominent :-

2 / 25

Stepper motorย  ย are extremelyย  ย reliable :-

3 / 25

The largest valueย  ย for which the instrumentย  ย output remainย  zero is ;-

4 / 25

With negative feedbackย  , theย  returningย  ย signal ;-

5 / 25

What is used for determiningย  the combination of each differentย  ย denominators ;-

6 / 25

To understand the positionย  ย of the boatย  ย autopilotย  system uses ;-

7 / 25

Flexible manufacturingย  systemย  lowers the company'sย  production cost;-

8 / 25

Chatbotsย  ย and humanoidย  ย robotsย  ย are differentย  ย in many aspects ;-

9 / 25

Data acquisitionย  ย can be done on qualitative quantities:-

10 / 25

A humanoidย  robot is anย  example ofย  :-

11 / 25

OP ampsย  used asย  high and low passย  filter circuitย  employ whichย  configurationย  :-

12 / 25

Hall effect is clearly visible in :-

13 / 25

In which type of gearย  teethesย  ย are parallel toย  the axis :-

14 / 25

Which type of gear is used toย  convert rotaryย  into translatoryย  motion :-

15 / 25

We can not storeย  ย analog data directly ;-

16 / 25

Which type of motorย  ย is not anย  ย encoderย  motor ;-

17 / 25

A 4-bitย  ย R/2R ladderย  digital to analogย  ย  converter uses _______:-

18 / 25

Microprocessorย  ย  bases electricalย  ย motorsย  are used for ;-

19 / 25

How is the noiseย  ย immunityย  ย of PLCsย  to electricalย  noisesย  ย as comparedย  ย to that ofย  ย conventionalย  relayย  ย controllers ;-

20 / 25

Which is an example of Digital mediaย  ย processor ;-

21 / 25

Which type of forceย  does theย  tiltingย  trainย  produce ;-

22 / 25

How many degreesย  ย of freedomย  ย do anย  industrialย  redundantย  arm has ;-

23 / 25

The register that providesย  control and statusย  ย information aboutย  ย countersย  is ;-

24 / 25

What does CAM stands forย  in terms ofย  ย memoryย  storageย  ย and data flow :-

25 / 25

Optical _____________ is utilized to measureย  the temperatureย  ย of objects . This relies onย  blackbodyย  ย radiation;-

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