All Exams Test series for 1 year @ ₹349 only
Question

Which of the following auxiliary systems maintains engine temperature by circulating

coolant and dissipating excess heat through the radiator?

This question was previously asked in
RRB NTPC 2025 Graduate Level CBT 1 Question Paper (25-Mar-2026) (Shift 3)
The correct answer is

Cooling system

An engine generates a large amount of heat during combustion, and this heat must be removed to keep components within safe operating temperatures.

The cooling system does this by circulating coolant through passages in the engine block and head, carrying the absorbed heat to the radiator where it is dissipated to the surrounding air.

The lubrication system reduces friction, the exhaust system carries away burnt gases, and the fuel supply system delivers fuel; none of these manage engine temperature through coolant and a radiator.

Hence, the answer is Cooling system.

Was this answer helpful?

Similar Questions

  1. A diesel engine manufacturer needs to ensure rapid and consistent coolant flow through the engine regardless of its operating temperature. Which cooling system design should be selected to meet this requirement?

  2. In a real-life scenario, how should a mechanic systematically diagnose and remedy persistent high engine oil pressure involving multiple possible causes?

  3. A diesel engine workshop tests a radiator by measuring the temperature of water entering and exiting the radiator core during a simulated run. What finding would best confirm that the radiator is performing its intended function?

  4. A marine diesel engine is fitted with a coolant system operating under increased pressure. During operation, the engine coolant temperature rises above normal limits. What is the most likely direct consequence regarding the coolant’s boiling point due to the increased system pressure?

  5. Which process is initiated when the cooling fan operates as designed in a diesel engine cooling system?

  6. Which engine cooling method removes heat by circulating a liquid around the cylinder walls and transferring it to a radiator?

  7. Why is it important for the thermostat to begin opening at a specific temperature during engine operation?

  8. Which of the following best describes the relationship between the radiator pressure cap and coolant loss prevention?

  9. Which cooling system is least suitable for use in areas with high humidity?

  10. In an industrial engine, the cooling water temperature unexpectedly rises above normal,

    but oil pressure and oil flow remain consistent. How does this condition affect the oil

    cooler’s ability to regulate engine oil temperature?


Important Questions from Cooling System

  1. Which component acts as the drive device in the automobile air conditioning system?

  2. A radiator core should be cleaned _________.

  3. Which of the following is an engine coolant property

  4. In the latest vehicle's cooling system, hose pipes are made up of:
  5. Which of the following are types of water circulations in a radiator?
Need Expert Advice?
Upcoming Exams
RRB NTPC
September 27, 2026
Test Series
RRB ALP img
Railways
RRB ALP 2026 Mock Test series
1031 Tests 1 Tests Free
717 Attempts
4.3(233)
English, Hindi
More Questions from RRB ALP

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App