Tata Hitachi "Be Safe, Stay At Home"

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Shoven Kumar
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Quizzes Created: 1 | Total Attempts: 97
| Attempts: 97
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  • 1/30 Questions

    Pilot pressure is-

    • 45 Bar 
    • 40 Bar 
    • 30 Bar 
    • 50 Bar 
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About This Quiz

This Tata Hitachi quiz focuses on essential maintenance knowledge for safe operations during home stays, covering relay checks, pressure levels, valve locations, and air filter protocols.

Tata Hitachi "Be Safe, Stay At Home" - Quiz

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  • 2. 

    How to Check continuity of lengthy wire- Example Controller to EC Sensor.

    • Using extra length wire 

    • Using Chasis Ground  

    Correct Answer
    A. Using Chasis Ground  
    Explanation
    The correct answer is "Using Chasis Ground". To check the continuity of a lengthy wire, one can use the chassis ground as a reference point. By connecting one end of the wire to the chassis ground and the other end to the EC sensor, any breaks or interruptions in the wire can be detected. If there is continuity, it means that the wire is intact and functioning properly.

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  • 3. 

    Function of TS valve is-

    • Block the neutral line 

    • Activate Straight Travel spool 

    • Increase MRV pressure 

    • None 

    Correct Answer
    A. Activate Straight Travel spool 
    Explanation
    The correct answer is "Activate Straight Travel spool." The TS valve is responsible for activating the Straight Travel spool, which controls the movement of the hydraulic cylinder in a straight line.

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  • 4. 
    There is a Diode in lamp circuit . Will the bulb Glow? - ProProfs

    There is a Diode in lamp circuit . Will the bulb Glow?

    • Yes 

    • No 

    Correct Answer
    A. Yes 
    Explanation
    The correct answer is "Yes". This is because a diode allows current to flow in only one direction. In a lamp circuit, when the diode is connected in the correct orientation, it will allow current to flow through the lamp, causing it to glow.

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  • 5. 

    The GPS system fitted in EX200 Super plus is-

    • Consite 

    • Insite 

    • Both consite & insite 

    • None 

    Correct Answer
    A. Insite 
    Explanation
    The correct answer is "Insite." This means that the GPS system fitted in the EX200 Super plus is called Insite.

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  • 6. 

    Crossover relief valves associates with which operation

    • Boom 

    • Arm 

    • Swing 

    • Bucket

    Correct Answer
    A. Swing 
    Explanation
    Crossover relief valves are associated with the swing operation.

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  • 7. 

    Function of SH line is to-

    • Release parking brake of travel motor 

    • Release parking brake of swing motor 

    • To increase MRV setting during travel 

    • None 

    Correct Answer
    A. Release parking brake of swing motor 
    Explanation
    The correct answer is "Release parking brake of swing motor." The SH line is responsible for releasing the parking brake of the swing motor.

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  • 8. 

    What is the recommended interval for air filter inner element cleaning-

    • No cleaning only replacement required 

    • 1000 Hrs 

    • 500 Hrs 

    • 250 Hrs 

    Correct Answer
    A. No cleaning only replacement required 
    Explanation
    The recommended interval for air filter inner element cleaning is "No cleaning only replacement required." This means that instead of cleaning the air filter, it is recommended to replace it entirely.

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  • 9. 

    How many power modes are provided in Ex-200LC Super ?

    • Four 

    • Three 

    • Two 

    • One 

    Correct Answer
    A. Two 
    Explanation
    The correct answer is "Two". This suggests that there are only two power modes provided in the Ex-200LC Super.

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  • 10. 

    The MRV pressure is-

    • 285 kgf/cm2 

    • 350 kgf/cm2 

    • 390 kgf/cm2 

    • 285 /350 -kgf/cm2 

    Correct Answer
    A. 285 /350 -kgf/cm2 
  • 11. 

    What is full function of DC – DC converter ?

    •  DC-DC Converter supplies DC Voltage to Engine speed controller 

    • DC- DC Converter supplies DC voltage to PWM relay, EC sensor and Switch Box 

    • DC - DC relay supplies 5 volts to Engine control system 

    • DC-DC Convertor not used in EX 200 super 

    Correct Answer
    A. DC- DC Converter supplies DC voltage to PWM relay, EC sensor and Switch Box 
    Explanation
    The correct answer is "DC- DC Converter supplies DC voltage to PWM relay, EC sensor and Switch Box". This option states that the full function of a DC-DC converter is to supply DC voltage to a PWM relay, EC sensor, and Switch Box.

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  • 12. 

    The working voltage of Auto idle Pressure sensors on EX-super series is :

    •  10 Volts 

    •  6 Volts 

    • 5 Volts 

    • 24 Volts 

    Correct Answer
    A. 24 Volts 
    Explanation
    The correct answer is 24 Volts. This means that the working voltage of Auto idle Pressure sensors on EX-super series is 24 Volts.

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  • 13. 

    The rating of a battery is in _________

    • Voltage 

    •  Ampere Hour 

    • Current 

    •  None 

    Correct Answer
    A.  Ampere Hour 
    Explanation
    The rating of a battery is measured in Ampere Hour. This is because Ampere Hour is a unit of electric charge, which represents the amount of charge that can be delivered or withdrawn from a battery. It indicates the capacity of the battery and how long it can sustain a given current. Voltage is a measure of the electric potential difference between two points, and current is the flow of electric charge. Neither of these directly represents the rating or capacity of a battery.

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  • 14. 

    Engine control motor used on EX Super series is interchangeable with ZX series EC motor

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The given statement is true. The engine control motor used on the EX Super series can be interchanged with the ZX series EC motor. This means that the motor can be used interchangeably between the two series without any compatibility issues or modifications required.

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  • 15. 
    The image is - - ProProfs

    The image is -

    • Counter balance valve 

    • Center Joint 

    • Tee Body 

    • None 

    Correct Answer
    A. Center Joint 
    Explanation
    The correct answer is "Center Joint" because the image is not visible in the question. Without the image, it is not possible to determine the correct answer or provide an explanation.

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  • 16. 
    The circled component is- - ProProfs

    The circled component is-

    • Bypass shut out valve 

    • TS valve 

    • Counter balance valve 

    • None 

    Correct Answer
    A. Counter balance valve 
    Explanation
    The correct answer is "Counter balance valve" because the circled component in the question is most likely a counter balance valve. This type of valve is used to control the flow of fluid in a hydraulic system and maintain balance between the load and the pressure. It is typically installed in applications where there is a need to control the movement of heavy loads and prevent them from free-falling or collapsing due to gravity.

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  • 17. 

    What is Function of PWM relays?

    • PWM relay controls main HP & EP mode 

    • PWM relays used to control engine alarms  

    • PWM relay controls Engine control motor forward & reverse direction 

    • None of above 

    Correct Answer
    A. PWM relay controls Engine control motor forward & reverse direction 
    Explanation
    The correct answer is that PWM relay controls the engine control motor forward and reverse direction. This means that the PWM relay is responsible for controlling the movement of the engine control motor in both the forward and reverse directions.

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  • 18. 
    The Hitachi color of wires  for Terminals 1 , 2  , 5  Respectively are:        - ProProfs

    The Hitachi color of wires  for Terminals 1 , 2  , 5  Respectively are:       

    •  Blue yellow , Yellow  Black , Purple 

    • Yellow  Black, Purple , Blue yellow 

    • Purple , Yellow Black , Blue yellow 

    • Blue yellow , purple , Yellow Black 

    Correct Answer
    A.  Blue yellow , Yellow  Black , Purple 
  • 19. 

    How do you check coil of a relay

    • Check Continuity 

    • Check resistance  

    •  Check Voltage 

    • Check multi meter

    Correct Answer
    A. Check resistance  
    Explanation
    To check the coil of a relay, you can use a multimeter to measure the resistance. The coil of a relay is typically a coil of wire, and by measuring the resistance, you can determine if the coil is intact and functioning properly. If the resistance is within the expected range, it indicates that the coil is in good condition. If the resistance is too high or too low, it may indicate a problem with the coil, such as a break or a short circuit. Therefore, checking the resistance is a reliable method to ensure the functionality of the relay coil.

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  • 20. 

    What is full form of PWM relay?

    • Power work mode relay 

    • Pulse Width Modulation relay 

    • Pulse wave mode relay 

    •  Power Wave Making Relay 

    Correct Answer
    A. Pulse Width Modulation relay 
    Explanation
    The correct answer is "Pulse Width Modulation relay". PWM stands for Pulse Width Modulation, which is a technique used to control the average power delivered to a load by varying the width of the pulse signal. In the context of a relay, PWM relay refers to a relay that uses pulse width modulation to control the switching of the relay contacts. This allows for precise control of the relay operation and is commonly used in applications such as motor control, power inverters, and LED dimming.

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  • 21. 
    Please mention the how much voltage we get at point A and Point B    - ProProfs

    Please mention the how much voltage we get at point A and Point B   

    • 24V and 24V 

    • 24V and 12V 

    • 12V and 12V 

    • 12V and 24V 

    Correct Answer
    A. 12V and 24V 
  • 22. 

    Short circuit of wire will cause……………. In circuit: 

    • Over Current 

    • Over Voltage 

    • Too low capacitance 

    • Over Resistance 

    Correct Answer
    A. Over Current 
    Explanation
    A short circuit of wire in a circuit can cause over current. When a short circuit occurs, it creates a low resistance path for the current to flow, bypassing the intended components. This leads to a sudden increase in current, which can exceed the rated capacity of the circuit and cause over current.

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  • 23. 
    As shown below, the color of harness for Hitachi excavator in circuit diagram is marked : - ProProfs

    As shown below, the color of harness for Hitachi excavator in circuit diagram is marked :

    • WG     

    • WGR    

    • GRW 

    • GW 

    Correct Answer
    A. GW 
  • 24. 

    How many terminals are there for a NO/ NC  Relay

    • Five 

    • Two 

    • Three 

    • Four 

    Correct Answer
    A. Five 
  • 25. 

    Battery relay is which type of relay

    •  NO type 

    • NC type 

    • NO/NC type 

    • None of the above 

    Correct Answer
    A.  NO type 
    Explanation
    A battery relay is a type of relay that is normally open (NO) when the coil is not energized. When the coil is energized, the relay closes and completes the circuit, allowing current to flow. Therefore, the correct answer is "NO type".

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  • 26. 

    The location of anti drift valve as per oil flow-

    • Pump & spool 

    • Spool & control valve 

    • Spool & actuator 

    • None 

    Correct Answer
    A. Spool & actuator 
    Explanation
    The correct answer is "Spool & actuator". The anti drift valve is located between the spool and the actuator. This valve helps to prevent the actuator from drifting when there is no control signal applied to the spool.

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  • 27. 

    Function of bypass check valve is-

    • Directs the return oil to tank in cold condition 

    • Directs the return oil to tank always 

    • Directs the return oil to oil cooler 

    • None 

    Correct Answer
    A. Directs the return oil to tank in cold condition 
    Explanation
    The function of a bypass check valve is to direct the return oil to the tank in cold conditions. This means that when the oil is cold, the valve allows the oil to bypass the oil cooler and go directly back to the tank. This is important because cold oil needs to warm up before it can effectively cool the system, so bypassing the cooler in cold conditions helps to prevent damage to the system.

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  • 28. 

    How to Check EC Motor and EC Sensor ?     

    • Check resistance of motor coil and sensor 

    • Check continuity of motor coil and sensor 

    • Check voltage of motor coil and sensor 

    • Check resistance of motor coil and voltage of sensor. 

    Correct Answer
    A. Check resistance of motor coil and sensor 
    Explanation
    To check the EC motor and EC sensor, one should check the resistance of the motor coil and sensor. This is because the resistance value can indicate if there are any issues with the motor or sensor. If the resistance is too high or too low, it can indicate a problem with the components. By checking the resistance, one can determine if the motor and sensor are functioning properly.

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  • 29. 
    Which type of spool it is? - ProProfs

    Which type of spool it is?

    • Closed center open port 

    • Open center closed port 

    • Closed port closed center 

    • Open port open center 

    Correct Answer
    A. Open center closed port 
    Explanation
    The correct answer is "Open center closed port." This type of spool is characterized by having an open center, which allows fluid to flow freely when the spool is in neutral position. However, the ports are closed when the spool is shifted to one of the working positions, redirecting the flow of fluid.

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Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 31, 2020
    Quiz Created by
    Shoven Kumar
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