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The total losses in a well designed D.C. generator of 10 kW will be nearly______________?
Related MCQs
Which of the following losses are significantly reduced by laminating the core of a D.C. generator ?
Which of the following loss in a D.C. generator is dissipated in the form of heat?
Which of the following steps is likely to result in reduction of hysteresis loss in a D.C. generator ?
In a manual shunt motor starter?
D.C. shunt motors are used for driving__________?
Torque developed by a D.C. motor depends upon__________?
Which of the following loss in a D.C. generator varies significantly with the load current ?
The losses occurring in a D.C. generator are given below. Which loss is likely to have highest proportion at rated load of the generator ?
In a D.C. generator all of the following could be the effects of iron losses except__________?
The hysteresis loss in a D.C. machine least depends on__________?
Regenerative method of braking is based on that__________?
The main disadvantage of the Ward-Leonard control method is__________?
In Ward-Leonard control the lower limit of speed is imposed by________?
For constant torque drive which speed control method is preferred ?
Ward-Leonard control is basically a__________?
Which motor should not be started on no-load ?
Which of the following motors is most suitable for signalling devices and many kinds of timers ?
Which of the following motors is usually used in house-hold refrigerators ?
Why are the D.C. motors preferred for traction applications ?
If the speed of a D.C. shunt motor is increased, the back e.m.f. of the motor will_________?
Which of the following motors one will choose to drive the rotary compressor ?
If the terminals of armature of D.C. motor are interchanged, this action will offer following kind of braking?
If a D.C. motor designed for 40°C ambient temperature is to be used for 50°C ambient temperature, then the motor__________?
The armature voltage control of D.C. motor provides__________?
The plugging gives the__________?
For a D.C. shunt motor if the excitation is changed__________?
Which motor has the poorest speed control?
If I2 be the armature current, then speed of a D.C. shunt motor is__________?
The speed of a D.C. shunt motor can be increased by__________?
As there is no back e.m.f. at the instant of starting a D.C. motor, in order to prevent a heavy current from flowing though the armature circuit__________?
The armature voltage control of D.C. motor provides__________?
The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load. The speed regulation of the motor is__________?
Usually wide and sensitive speed control is desired in case of__________?
Which of the following method of speed control of D.C. machine will offer minimum efficiency ?
The armature torque of the D.C. shunt motor is proportional to__________?
As -the load is increased the speed of D.C. shunt motor will__________?
Which of the following motor has the poorest speed regulation ?
Buses, trains, trolleys, hoists, cranes require high starting torque and therefore make use of__________?
In a differentially compounded D.C. motor, if shunt field suddenly opens__________?
Following motor is used where high starting torque and wide speed range control is required?
Flywheel is used with D.C. compound motor to reduce the peak demand by the motor, compound motor will have to be__________?
Speed control by Ward Leonard method gives uniform speed variation__________?
Sparking, is discouraged in a D.C. motor because__________?
Three point starter can be used for__________?
Which D.C. motor is generally preferred for cranes and hoists ?
In D.C. machines the residual magnetism is of the order of__________?
For which of the following applications a D.C. motor is preferred over an A.C. motor ?
The condition for maximum power in case of D.C. motor is__________?
The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is__________?
Which one of the following is not the function of pole shoes in a D.C. machine ?
If the supply voltage for a D.C. motor is increased, which of the following will decrease ?
The total losses in a well designed D.C. generator of 10 kW will be nearly______________?
A. 100 W
B. 500 W
C. 1000 W
D. 1500 W
Correct Answer:
500 W
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Last Updated:
July 02, 2018