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Locomotives with manometer bogies have suitability for passanger as well as freight service.

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 Which braking system on the locomotives is the costliest among the following? A) Vacuum braking on diesel locomotives B) Vacuum braking on steam locomotives C) Regenerative braking on electric locomotives D) All braking systems are equally costly

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With n nodes and b branches a network will have   (A) (b+n) links (B) b - n +1 links (C) b -n-1 links (D) b + n + 1 links 

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The driving point impedance with poles at ω = 0(zero) and ω = ∞ (infinity) must have the  (a) s term in the denominator and an excess term in the numerator (b) s term in the numerator and an excess term in the denominator (c) s term in the numerator and equal number of terms in the numerator and denominator (d) s term in the denominator and equal number of terms in the numerator and denominator

asked May 16, 2018 in Control System by Shimroz123
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To protect the power transformer (Y-Y with neutral grounded) against fault, what type of connection do the CTs have ?

asked Apr 27, 2018 in Switchgear And Protection by Shimroz123
1 answer 29 views

An electrical circuit with 10 branches and 7 junctions will have

asked Apr 26, 2018 in Network Analysis by Shimroz123
1 answer 24 views

A permanent magnet stepper motor with 8 poles in stator and 6 poles in rotor will have a step angle of (a) 7.5° (b) 15° (c) 30° (d) 60°

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
1 answer 14 views

A resistor with the color coded value of 1000 ohms and ± 10% tolerance can have an actual resistance between ________. A. 990 ohm and 1010 ohm B. 900 ohm and 1100 ohm C. 1000 ohm and 1100 ohm D. 900 ohm and 1000 ohm. 

asked Apr 12, 2018 in Electrical Engineering by Shimroz123
1 answer 29 views

A 3 phase, 400 volts, 50 Hz, 100 kW, 4 pole squirrel cage induction motor with a rated slip of 2% will have a rotor speed of: (A) 1500 rpm (B) 1470 rpm (C) 1530 rpm (D) 1570 rpm

asked Apr 11, 2018 in Computer Engineering by Shimroz123
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For an SCR with turn-on time of 5 microsecond, an ideal trigger pulse should have   (a) short rise time with pulse width = 3 µsec (b) long rise time with pulse width = 6 µsec (c) short rise time with pulse width = 6 µsec (d) None of the above 

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 8 views

Tractive effort acts  A) At 90° with respect to the rails measured in counter clockwise direction B) At 270° with respect to the rails measured in counter clockwise direction C) Tangential to the driving wheel D) For overcoming the effect of gravity only when a train is being hauled

asked May 20, 2018 in Electric Traction by Shimroz123
1 answer 14 views
1 answer 17 views

Which have more free electrons: conductors or insulators? 

asked Jul 1 by Zeeshan

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