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DC locomotive most suitable for
Urban Service
Suburban Service
Main line service
Either a or b
Either a or b
Given: DC locomotive, urban service, suburban service, main line service
DC locomotive, urban service, suburban service, main line service
P = \frac{V \times I}{1000}$$P is power in kW, V is voltage in volts and I is current in amperes
Understanding the context of DC locomotives
DC locomotives are suitable for services that require frequent acceleration and deceleration. Urban and suburban services involve frequent stops, making DC locomotives a suitable choice.
V=IR
Analyzing the options provided
The question provides options about the suitability of DC locomotives for urban service, suburban service, main line service, or either of the first two.
P=1000VรIโ
Relating DC locomotive characteristics to service types
DC locomotives are well-suited for urban and suburban services due to their ability to handle frequent starts and stops efficiently. Main line services, which often require higher speeds and less frequent stops, may not be as ideal for DC locomotives.
ฮท=PinโPoutโโ
D is correct because DC locomotives are most suitable for either urban or suburban services due to their operational characteristics.
Understanding the characteristics of different types of electric locomotives and their applications can help in solving problems related to electric traction and railway services.