NCE PRACTICE EXAM
2023 Edition
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Free Sample Questions
Free Sample Questions
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1/20
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| 1. | Which type of air ducts are the most efficient? | ||
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2/20
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| 2. | In an air-conditioning circuit what is the black wire? | ||
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3/20
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| 3. | If the ducts are in concrete, what is the proper type of furnace? | ||
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4/20
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| 4. | A 60,000 BTU cooling unit has how many tons of cooling capacity? | ||
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7/20
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| 7. | Which of the following is the best insulation? | ||
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8/20
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| 8. | On an A/C system, the return should be _____________. | ||
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10/20
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| 10. | What type of fitting would you use to join two pipes of different sizes? | ||
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11/20
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| 11. | What is the proper way to connect to galvanized iron pipe to copper? | ||
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12/20
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| 12. | What is the resistance of the circuit with 110 volts and 22 amps? | ||
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14/20
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| 14. | When mounting solar collectors on the ground you should _________________. | ||
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15/20
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| 15. | Solar systems typically use what type of thermostat? | ||
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16/20
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| 16. | What should be the primary concern in designing a solar unit? | ||
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17/20
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| 17. | Efficient collectors will typically heat how many gallons, per square foot, per day? | ||
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18/20
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| 18. | What device is recommended on the outlet side of a collector to handle expansion and boiling? | ||
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