Related Questions

The wattage of motor for driving domestic sewing machine will be around
A 100 to 150 W
B 40 to 75 W
C 10 to 30 W
D 5 to 10 W
Speed control of a universal motor is achieved by
A Varying field flux with tapped field windings
B Connecting rheostat in series
C Applying variable voltage by means of silicon controlled rectifier
D All of the above methods
a motor -cycle covers 40 Km with a speed of 20 km /hr. Find the speed of the motor -cycle for the next 40 km journey so that the average speed of the whole journey will be 30 km / hr.
A 70.0km /hr
B 52.5km /hr
C 60.0km/hr
D 60. 5 km / hr
A motor cycle covers 40 km with a speed of 20 km/hr. Find the speed of the motor cycle for the next 40 km journy so that the average speed of the whole journey will be 30 km/hr?
A 70
B 52.5
C 60
D 60.5
The speed characteristics of an induction motor closely resemble the speed-load characteristics of which of the following machines
A D.C. series motor
B D.C. shunt motor
C Universal motor
D None of the above
The drive-shafts are connected to the differential and wheel hubs through universal joints because the universal joints
A Absorb the vibrations transferred from the surface of the road
B Compensate for variations in the relative positions of the differential and the wheels which result from bumpy road surfaces or other similar driving conditions.
C Absorb any difference in speed between the left and right wheels when the vehicle is turning
D None of the above
Flywheel is used with D.C. compound motor to reduce the peak demand by the motor, compound motor will have to be
A Level compounded
B Under compounded
C Cumulatively compounded
D Differentially compounded
In case of high speed universal motor which of the following needs more attention ?
A End play
B Air gap
C Insulation in rotor
D Balancing of rotor
The speed of a universal motor is generally reduced by using
A gear trains
B V-belts
C brakes
D chains
The speed of a universal motor is usually reduced by using
A gearing
B belts
C brakes
D chains

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