Physics · Engineering Mechanics & Gear Geometry
एक क्राउन गियर (crown gear) का पिच कोण हमेशा कितना होता है?
- 145° के बराबर
- 290° से कम
- 390° से अधिक
- 490° के बराबर✓
सही उत्तर देखें
90° के बराबर
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