1. 25
2. 30
3. 35
4. 60
30
1. 8000
2. 6000
3. 4000
4. 1000
1000
1. total linear momentum only
2. total kinetic energy only
3. both linear momentum and kinetic energy
4. neither linear momentum nor kinetic energy
total linear momentum only
1. 0
2. αT
3. Eα?T
4. Eα?TL
Eα?T
1. occurs when excitation frequency is greater than undamped natural frequency
2. occurs when excitation frequency is less than undamped natural frequency
3. occurs when excitation frequency is equal to undamped natural frequency
4. never occurs
occurs when excitation frequency is equal to undamped natural frequency
1. high speed steel
2. hypoeutectoid steel
3. hypereutectoid steel
4. cast iron
hypereutectoid steel
1. low carbon steel
2. titanium
3. copper
4. tin
titanium
1. gas tungsten arc welding
2. resistance spot welding
3. friction welding
4. submerged arc welding
friction welding
1. 20.56
2. 2656
3. 30.56
4. 36.56
2656
1. induction motor
2. dc servo motor
3. stepper motor
4. linear servo motor
induction motor