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0 [{"id":407209,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 21:44:07","updated_at":"2018-03-12 21:44:07","questionName":"A hydrostatic test is at a pressure of","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407222,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 22:19:56","updated_at":"2018-03-12 22:19:56","questionName":"The most commonly used flame detection devices are: 1. Ultraviolet detectors 2. Thermocouples 3. Flame rods 4. Infrared detectors 5. Photoelectric cells","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407214,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 21:52:39","updated_at":"2018-03-12 21:52:39","questionName":"The wax filled sensor probe in a combination pressure-temperature relief valve will expand and open the valve by means of a piston at approximately:","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407210,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 21:45:13","updated_at":"2018-03-12 21:45:13","questionName":"Gauge glass safety shutoff valves are equipped with a:","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407208,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 21:43:03","updated_at":"2018-03-12 21:43:03","questionName":"A heating boiler must have a permanently attached marker indicating:","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407241,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 23:25:12","updated_at":"2018-03-12 23:25:12","questionName":"The lock-out switch will be actuated when the:","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407224,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 22:21:37","updated_at":"2018-03-12 22:21:37","questionName":"The infrared scanner is mounted on the end of a sighting tube in such a way that its temperature will not exceed:","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407213,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 21:51:32","updated_at":"2018-03-12 21:51:32","questionName":"The minimum size of the hot water heating boiler bottom blow off or drain connection shall be:","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407252,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 23:29:49","updated_at":"2018-03-12 23:29:49","questionName":"Chemicals used for the alkaline boil out of a boiler consist of a combination of which of the following. 1. Sodium hydroxide 2. Sodium sulphite 3. Sodium phosphate 4. Sodium carbonate 5. Sodium chloride","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407211,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 21:46:50","updated_at":"2018-03-12 21:46:50","questionName":"The procedure for testing a directly connected gauge glass would be. 1. Close the gauge water valve 2. Open the gauge water valve 3. Close the gauge steam valve 4. Open the gauge steam valve 5. Close the gauge drain valve 6. Open the gauge drain valve 7. Proving steam passage is clear 8. Proving water passage is clear","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407226,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 22:24:03","updated_at":"2018-03-12 22:24:03","questionName":"The infrared scanner contains a _____ cell which reacts to infrared rays.","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407244,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 23:26:12","updated_at":"2018-03-12 23:26:12","questionName":"Operating temperatures below _____ of a hot water boiler are often avoided to prevent flue gas condensation.","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407225,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 22:22:51","updated_at":"2018-03-12 22:22:51","questionName":"Each automatically fired hot water boiler shall have a high limit temperature control that will shut off the fuel supply to the boiler to prevent the water from exceeding the maximum allowable temperature of:","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407220,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 22:16:22","updated_at":"2018-03-12 22:16:22","questionName":"The low gas pressure cut-off switch can be tested by:","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null},{"id":407215,"quiz_id":"20575","answer_id":null,"answerType_id":"0","created_at":"2018-03-12 21:53:26","updated_at":"2018-03-12 21:53:26","questionName":"\ufeffThe highest pressure to which the scale on the pressure gauge of a hot water boiler may be graduated is _____ times the pressure at which the pressure relief valve is set.","questionTimeSeconds":"0","questionTimeMinutes":"2","questionImagePath":null,"position":null,"explanation":"","question_score_id":null,"lang":null,"questionAudioPath":null}]
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A hydrostatic test is at a pressure of

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