Pass Benchmark: 70% • Standard: USCG NMC / 46 CFR
USCG Engine General (Supplementary) (Set 15)
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Question 1 of 30
Referring to the illustrated huddling-chamber safety valve, what statement is true concerning the adjustment of the popping pressure? (SG-0018)
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30 MCQs #1 Referring to the illustrated huddling-chamber safety valve, what statement is true concerning the adjustment of the popping pressure? (SG-0018) #2 Concerning pressure-relief valves, what statement is true? #3 Concerning sentinel valves, what statement is true? #4 Referring to the illustrated pneumatically-operated diaphragm-actuated control valve, what statement is true? GS-0051 #5 Suppose the illustrated pneumatically-operated diaphragm-actuated control valve is used to control the fuel oil outlet temperature of a steam-heated heavy fuel oil heater by controlling the steam flow. What would be the result if the stem packing was over-tightened and the stem was unable to vertically move in either direction? Illustration GS-0051 #6 Assuming that the flow is from left to right on the illustrated pneumatically-operated diaphragm-actuated control valve, what statement is true? GS-0051 #7 In the illustrated pneumatically-operated diaphragm-actuated control valve, what statement is true concerning the opening and closing forces acting upon the control diaphragm? GS-0051 #8 Referring to the illustrated pneumatically-operated diaphragm-actuated control valve, what statement is true? GS-0051 #9 Suppose the pilot pressure range is from 3 to 15 psig for the illustrated pneumatically-operated diaphragm-actuated control valve. Assuming the control valve is trimmed for a linear response and the travel position indicator is calibrated in percentage, what would the approximate valve position with a 9 psig pilot pressure? GS-0051 #10 Referring to the illustrated bellows-type thermostatic steam trap, what statement is true concerning its operation? GS-0005 #11 Referring to the illustrated impulse steam trap, what would be the effect of threading the control cylinder "E" downward further into the trap body? GS-0002 #12 In the illustration shown, an efficient seal is maintained between the suction cover and the volute by __________. GS-0012 #13 In the pump shown in the illustration, what is the distance from the bottom of the inlet to the bottom end of the motor shaft? GS-0011 #14 What is the length of the stud used to secure the packing gland shown in the illustration? GS-0012 #15 Which of the speeds listed represents the synchronous speed rating of the lube oil pump motor shown in the illustration? GS-0011 #16 The working depth of the gear illustrated is represented by __________. Refer to Illustration GS-0111 #17 What is the distance between the center of the discharge outlet and the top of the motor illustrated? GS-0011 #18 Which letter represents the gear tooth working depth of the gear set illustrated? Refer to Illustration GS-0111 #19 The illustration is drawn to a scale of 3/8 inch = 1 inch. What is the full size dimension of "X", if the scale lengths for "E" = 5/8", "F" = 1 3/8", "G" = 2 1/8", and "H" = 5 3/4"? GS-0007 #20 The physical feature indicated for each of the smallest diameter ends of the device illustrated is that they are __________. GS-0008 #21 Which of the following statements is correct regarding the device shown in the illustration? GS-0008 #22 Figure "B", shown in the illustration, is dimensioned to indicate a/an __________. GS-0019 #23 The dimension of the sensing gap in the left hand limit sensor assembly shown in the illustration is __________. GS-0010 #24 The shaft shown in the illustration has an overall length of 42 inches in addition to the following dimensions of "A" = 8", "B" = 8", "C" = 10", and "D"=8 3/16" The tapered length "X" is __________. GS-0133 #25 The letters 'NPT' used in the notation 1/8-27 NPT as shown in the illustration, indicates the __________. GS-0010 #26 The illustration shown represents a blueprint of a metal __________. GS-0028 #27 In the illustration, line "C" is a __________. GS-0006 #28 In the figure shown in the illustration, the standard blueprint symbols above the letters "A", "B", and "C" indicate __________. GS-0036 #29 How many hidden lines are shown in the right side (end) view of the drawing illustrated? GS-0021 #30 In the illustration, line "D" is a/an __________. GS-0006
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