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

If the resistanceย  of tuned circuit is increased , the Q of the circuit:-

2 / 25

The unit of electric energy is:-

3 / 25

Which regulation is considered best:-

4 / 25

The %age 2 by volume in atmosphere air is:-

5 / 25

If a transistor amplifier feeds a loadย  of low resistance , then voltage gain will be:-

6 / 25

Why damping is provided in an instrument for ;-

7 / 25

When the battery is being discharged , the terminal voltage decrease with:-

8 / 25

When DC motorย  is preferred for elevator :-

9 / 25

Solid grounding is used forย  voltages;-

10 / 25

Theย  corona is affected byย  ย __________:-

11 / 25

The kinetic energy of a bounded electron is_____________ than that of unbounded electron;-

12 / 25

The term ' Cogging' is associated with:-

13 / 25

Linear differential transformer isย  which typeย  of ____________ย  transducer:-

14 / 25

The voltage drop will be least in which resistor:-

15 / 25

A fuel cell converts ____________ energy into electric energy:-

16 / 25

The channel of JFET is between the:-

17 / 25

An SCR canย  exercise control over _____________________ ofย  ac supply:-

18 / 25

At series resonance, the net reactiveย  componentย  of circuit current is:-

19 / 25

The maximum collector efficiencyย  of class B operation is:-

20 / 25

Volt ร— 1 watt = 1 Hp:-

21 / 25

Which method is usedย  for laying of undergroundย  cables:-

22 / 25

The point of intersection of dc and acย  load lines is called;-

23 / 25

Circuit turbine isย  pressureย  velocity compounded steam turbine:-

24 / 25

The value of specific gravity of acids when a lead acid battery is fully charges is:-

25 / 25

Insulation ofย  dry type transformersย  is done using prepregs. It is manufacturedย  by using;-

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Online Practice of Past Questions of Mechanical Engineering

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Mechanical Engineering Tests Quiz

1 / 25

The size of cam dependsย  ย upon :-

2 / 25

Which of the following isย  an open pair :-

3 / 25

Gas turbineย  ย uses highย  ย air fuelย  ย ratio toย  ย reduceย  outgoingย  ย temperature :-

4 / 25

Sensitiveย  drilling machineย  ย is also knownย  asย  ย benchย  drillingย  ย machine :-

5 / 25

Non disprasiveย  ย infrared analyzerย  ย is widelyย  ย  acceptedย  instrumentย  for measuring :-

6 / 25

The forces which meetย  at one pointย  ย  ,but theirย  ย  lines of actionย  do not lieย  ย  in a planeย  , are called :-

7 / 25

Superchargingย  reduces knockingย  in dieselย  engine ;-

8 / 25

Which process is preferred for preparingย  ย aluminiumย  ย ingotsย  ย for the liquid penetrantย  testing method :-

9 / 25

Why is an idlerย  gear usedย  in gear trainย  ย ;-

10 / 25

Which process squeezes metalsย  into peaksย  ย and troughsย  with plasticย  ย deformation :-

11 / 25

During hot workingย  ย  of metals ;-

12 / 25

Pronyย  brakesย  areย  usedย  forย  testing :-

13 / 25

__________ is the simplest type ofย  the motionย  ย and is alongย  a straight line path ;-

14 / 25

Centrifugalย  ย compressorย  ย have a widerย  ย stable operating range thanย  axial flowย  ย compressor :-

15 / 25

The plastic materialย  ย which do not undergoย  ย chemical changeย  when heated are :-

16 / 25

Planck's law holds good forย  :-

17 / 25

A single forceย  ย  and a coupleย  ย acting in theย  ย same planeย  ย  upon a rigid bodyย  ;-

18 / 25

Which property is the fineย  ย grained structure :-

19 / 25

Which equation represent the Gibbs phase rule :-

20 / 25

The necessaryย  ย conditionย  ย for forcesย  to be inย  equillibriumย  ย  is thatย  these shouldย  ย be ;-

21 / 25

Heat balance sheet indicatesย  ;-

22 / 25

The links of a machineย  may transmit bothย  power and motionย  :-

23 / 25

Which is theย  lightestย  and most volatileย  liquidย  ย fuel ;-

24 / 25

For startingย  ย an axialย  ย flow pump,ย  its deliveryย  ย valve shouldย  ย be :-

25 / 25

The power actually developedย  by the engine cylinder of an ICย  engineย  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

White noise has ________ mean:-

2 / 25

____________ is an insulating material:-

3 / 25

Duringย  reverseย  recoveryย  timeย  ย chargeย  carrierย  ofย  Junction J1ย  isย  sweptย  out ;-

4 / 25

An electrolytic capacitor is made to provide:-

5 / 25

Whichย  isย  the advantageย  ofย  usingย  the Gaussย  Jordan method :-

6 / 25

In a N type semi conductor , the concentration of minority carriers mainly depends on:-

7 / 25

Aย  PNPNย  deviceย  havingย  two gatesย  isย  ;-

8 / 25

The typicalย  value of SCR for modernย  alternatorย  is ;-

9 / 25

FET has high input impedance:-

10 / 25

Electric displacement is ___________ quantity:-

11 / 25

The unit of relative permeability is:-

12 / 25

CMRRย  isย  more in ;-

13 / 25

The frameย  ofย  an inductionย  motor isย  usuallyย  madeย  of :-

14 / 25

Aย  doubleย  ย squirrelย  cageย  inductionย  motorย  hasย  ________ parallelย  windingsย  in rotor :-

15 / 25

Which are orthonormalย  ย signalย  representation;-

16 / 25

Manetising steel is normal difficult because:-

17 / 25

The capacity of a lead acid cell does not depend on its:-

18 / 25

Theย  pointย  atย  whichย  theย  outputย  signal power has fallenย  toย  0.707ย  ofย  itsย  peakย  valueย  is called as :-

19 / 25

Whichย  devicesย  hasย  highest di/dtย  andย  dv/dt capability ;-

20 / 25

If the sheet of the bakelite is inserted between the plates of an air capacitor , the capacitance will:-

21 / 25

In aย  communication systemย  , aย  processย  inย  which statisticalย  averagesย  and timeย  averagesย  are equalย  is called as :-

22 / 25

AC powerย  in a loadย  can be controlled byย  usingย  ;-

23 / 25

In caseย  the airย  gapย  in anย  inductionย  motor isย  increasedย  theย  powerย  factor willย  _____________:-

24 / 25

Asย  theย  breakdown voltageย  reached ,ย  the DIACย  exhibitsย  negativeย  resistance characteristics;-

25 / 25

The FET is unipolar:-

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Online Practice of Mechatronics Engineering MCQs

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Mechatronics Engineering Tests Quiz

1 / 25

Which is an example ofย  data loggerย  kit :-

2 / 25

A transducerย  ย convertingย  ย groundย  ย movementย  ย to voltage is known as ;-

3 / 25

Which transducer is an example ofย  ย passiveย  ย transducer ;-

4 / 25

Whichย  ย of theseย  is notย  ย in sequence forย  genericย  ย design process :-

5 / 25

The number of turns of solenoidย  is inverselyย  ย proportional to the magneticย  field :-

6 / 25

What is the standardย  ย colour of ac supplyย  ย liveย  ย wire in India ;-

7 / 25

The capacity of data acquisitionย  systemย  ย  can be specifiedย  ย in terms of :-

8 / 25

What is the duty cycleย  ย of a signalย  if theย  pulseย  ย width isย  0.3 secondsย  and the time period isย  ย 0.6ย  seconds ;-

9 / 25

Which is not aย  part ofย  ย electricย  ย drive ;-

10 / 25

___________ is aย  PLC programmingย  language thatย  uses componentsย  ย resembling elementsย  used in a lineย  diagram:-

11 / 25

Which sensor can beย  ย used in robotsย  forย  ย measuringย  ย distance ;-

12 / 25

What is the root word of ' robot 'ย  ย . Whichย  is derivedย  fromย  Slavicย  language ;-

13 / 25

What doesย  ย ZMP in termsย  of roboticsย  stand forย  :-

14 / 25

Which is not aย  self driving car ;-

15 / 25

Machine controlย  ย unit implementsย  ย interpolation commandsย  ย to generateย  ย axialย  motionย  commands ;-

16 / 25

2D alembertyย  principleย  ย dynamicย  analysisย  ย in reciprocationย  engines ;-

17 / 25

A ________ is an electronicย  deviceย  ย thatย  transferย  one type of energyย  or physicalย  quantityย  ย into another ;-

18 / 25

The rotor ofย  ย a stepperย  ย motor has noย  ;-

19 / 25

Optical fiber sensorย  ย are notย  immune to electromagneticย  ย disturbances ;-

20 / 25

Who inventedย  ย Electroย  cardiogramย  :-

21 / 25

Which is not a dynamicย  characteristics ;-

22 / 25

A potentiometerย  ย can not be used for calibration of ammeter ;-

23 / 25

Electromagnetic brakesย  ย do not wear andย  tear ;-

24 / 25

Prototypingย  involvesย  replacingย  ย non computerย  system withย  ย actualย  hardware;-

25 / 25

When was the first attemptย  of light outย  ย manufacturingย  ย made ;-

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