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Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Machine Class Using the examples of driven machine type from Table A1 of AS2784, select which Class is appropriate for a mixer. Enter the class number (either 1, 2, 3 or 4) in the box below. Class 1 Class 2 O Class 3 O Class 4 TABLE Al SERVICE FACTORS FOR BELT DRIVES Type of driven machine Service factor (See Notes 1, 2 and 6) Soft' starts (See Note 4) Hours of duty per day "Heavy' starts (See Note 5) Hours of duty per day Class Examples <10 >10 >16 <10 >10 >16 S16 S16 Class 1 (Light duty) Agitators (uniform density) Blowers, exhausters and fans (up to 7.5 kW) Centrifugal compressors and pumps Belt conveyo (un mly loaded) Agitators ani mixersvariable density) 1.0 1.1 1.2 1.1 1.2 1.3 Class 2 (Medium Blowers, exha and fans (over 7.5 duty) 1.2 1.2 1.3 1.2 1.3 1.4 kW) Rotary compressors and pumps (other than centrifugal) Belt conveyors (not uniformly loaded) Generators and exciters Laundry machinery Lineshafts Machine tools Printing machinery Sawmill and woodworking machinery Screens (rotary) Brick machinery Bucket elevators Compressors and pumps (reciprocating) Conveyors (heavy duty) Hoists Mills (hammer) Class 3 1.2 1.3 1.4 1.4 1.5 1.6 (Неavy đuty) Pulverizers Punches, presses, shears Quarry plant Rubber machinery Screens (vibrating) Textile machinery Crushers (gyratory-jaw-roll) Mills (ball-rod-tube) Class 4 1.3 1.4 1.5 1.5 1.6 1.8 (Extra heavy duty)
Transcribed Image Text:Machine Class Using the examples of driven machine type from Table A1 of AS2784, select which Class is appropriate for a mixer. Enter the class number (either 1, 2, 3 or 4) in the box below. Class 1 Class 2 O Class 3 O Class 4 TABLE Al SERVICE FACTORS FOR BELT DRIVES Type of driven machine Service factor (See Notes 1, 2 and 6) Soft' starts (See Note 4) Hours of duty per day "Heavy' starts (See Note 5) Hours of duty per day Class Examples <10 >10 >16 <10 >10 >16 S16 S16 Class 1 (Light duty) Agitators (uniform density) Blowers, exhausters and fans (up to 7.5 kW) Centrifugal compressors and pumps Belt conveyo (un mly loaded) Agitators ani mixersvariable density) 1.0 1.1 1.2 1.1 1.2 1.3 Class 2 (Medium Blowers, exha and fans (over 7.5 duty) 1.2 1.2 1.3 1.2 1.3 1.4 kW) Rotary compressors and pumps (other than centrifugal) Belt conveyors (not uniformly loaded) Generators and exciters Laundry machinery Lineshafts Machine tools Printing machinery Sawmill and woodworking machinery Screens (rotary) Brick machinery Bucket elevators Compressors and pumps (reciprocating) Conveyors (heavy duty) Hoists Mills (hammer) Class 3 1.2 1.3 1.4 1.4 1.5 1.6 (Неavy đuty) Pulverizers Punches, presses, shears Quarry plant Rubber machinery Screens (vibrating) Textile machinery Crushers (gyratory-jaw-roll) Mills (ball-rod-tube) Class 4 1.3 1.4 1.5 1.5 1.6 1.8 (Extra heavy duty)
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