1) The simple linear de machine, shown in Fig. 1, has a supply voltage of 12...

 

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1) The simple linear de machine, shown in Fig. 1, has a supply voltage of 12 V, effective bar length of 1.25 m, equivalent circuit resistance of 0.1 Q2, and uniform magnetic field density B = 0.8 T directed into the page. The viscous friction force between the moving bar and rails varies linearly with the bar speed, and the viscous friction coefficient is 0.1 N.s/m. a) Find the no-load steady-state speed of the moving bar. b) Starting from the steady-state no-load conditions, suppose a mechanical load is attached to the moving bar. Find the bar's steady-state speed and machine efficiency when the load receives 175 W. c) Starting from the steady-state no-load conditions, suppose that an external force of 12.5 N to the right is applied to the bar. Find the bar's steady-state speed and machine efficiency. 12 V t=0 0.1 Ω Fig. 1 B=0.8 T into the page 1.25 m 1) The simple linear de machine, shown in Fig. 1, has a supply voltage of 12 V, effective bar length of 1.25 m, equivalent circuit resistance of 0.1 Q2, and uniform magnetic field density B = 0.8 T directed into the page. The viscous friction force between the moving bar and rails varies linearly with the bar speed, and the viscous friction coefficient is 0.1 N.s/m. a) Find the no-load steady-state speed of the moving bar. b) Starting from the steady-state no-load conditions, suppose a mechanical load is attached to the moving bar. Find the bar's steady-state speed and machine efficiency when the load receives 175 W. c) Starting from the steady-state no-load conditions, suppose that an external force of 12.5 N to the right is applied to the bar. Find the bar's steady-state speed and machine efficiency. 12 V t=0 0.1 Ω Fig. 1 B=0.8 T into the page 1.25 m

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Given Supply voltage V 12 V Bar length l 125 m Resistance R 01 Magnetic field B 08 T into the page V... View the full answer