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NMDC Junior Officer Mock Test 2026 – Free Online Test Series

This page lists all 5 free NMDC Junior Officer mock tests on Sarkari Results Now. A typical test has about 20 questions with a 20-minute timer. Tests follow the latest NMDC Junior Officer exam pattern and are free to attempt. Attempt them in order, review the answers after each test and track your progress to find weak topics before the real exam.

All NMDC Junior Officer Mock Tests

Sample NMDC Junior Officer Questions

  1. An over-excited synchronous motor draws current at

    1. zero power factor lagging only
    2. unity power factor only
    3. lagging power factor
    4. leading power factor

  2. Which is the national flower of India?

    1. Jasmine
    2. Rose
    3. Marigold
    4. Lotus

  3. An engine develops 30 kW brake power and consumes fuel at 0.002 kg/s with calorific value 40000 kJ/kg. Brake thermal efficiency is

    1. 26.7%
    2. 37.5%
    3. 62.5%
    4. 75%

  4. A driver gear with 20 teeth at 600 rpm drives a gear with 40 teeth. The driven gear speed is

    1. 600 rpm
    2. 300 rpm
    3. 150 rpm
    4. 1200 rpm

Attempt the full test above to see the correct answers.