Related Questions

Kiran purchased a scooter for Tk.52000. He sold it at loss of 10%. With that money he purchased another scooter and sold it at profit of 20%. What is his overall loss profit?
A tk.2060 profit
B tk.2560 loss
C tk.1340 loss
D tk.4160 profit
Kiran purchased a scooter for Tk. 52000. He sold it at loss of 10% .With that money be purchased another scooter and sold it at profit of 20% What is his overall loss/ profit?
A Tk. 2060 profit
B Tk. 2560 loss
C Tk. 1340 loss
D Tk. 4160 profit
Battery operated trucks are used in
A Steel mills
B Power stations
C Narrow gauge traction
D Factories for material transportation
In a battery cover is placed over the element and sealed to the top of the battery container. This is done
A to reduce evaporation of water from electrolyte
B to exclude dirt and foreign matter from the electrolyte
C to discharge both of the above functions
D to discharge none of the above functions
The battery is an electrochemical device, which means battery
A Makes chemicals by mechanical means
B Uses chemical action to provide electricity
C Has curved plates instead of flat plates
D Does not use an electrolyte
During rheostatic braking of D.C. series motors
A Motor is run as a generator
B Motor is reversed in direction
C Motor is run at reduced speed
D None of these
For which types of D.C. motor, dynamic braking is generally used?
A Shunt motors
B Series motors
C Compound motors
D All of the above
Regenerative method of braking is based on that
A Back e.m.f. is less than the applied voltage
B Back e.m.f. is equal to the applied voltage
C Back e.m.f. of rotor is more than the applied voltage
D None of the above
Which of the following braking systems on the locomotives is costly?
A Regenerative braking on electric locomotives
B Vacuum braking on diesel locomotives
C Vacuum braking on steam locomotives
D All braking systems are equally costly
Which of the following braking systems is used on steam locomotives?
A Hydraulic system
B Pneumatic system
C Vacuum system
D None of the above

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