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Functions of the commutator:
A commutator is a device, which under certain conditions changes ac into dc and vice versa.
The commutator is a form of rotating switch placed between the armature and external circuit and so arranged that it reverses the links to the external circuits at the instant of every reversal of the current in the armature coil. Thus it changes induced alternating currents in armature coils into direct currents in the external load circuits.
A rigid tank primarily contains 3 kg of air at 500 kPa, 290 K. The tank is connected by a valve to a piston-cylinder assembly oriented vertically and consisting of 0.05 m³ of air i
A girl throws a 0.1 kilogram ball at a wall. The ball hits the wall perpendicularly with a velocity of 5 meters per second and then bounces straight back with a velocity of 4
What is the essential difference between an electron and a beta ray? The electron of nuclear origin is known as a beta-particle. There is otherwise no difference among an elec
implementation of nand gate
A satellite of mass "M" is in orbit around the earth. If a second satellite of mass "2M" is to be placed in the similar orbit, the second satellite must have a velocity which i
The variable period of a moon of Jupiter, which is the basis of measurement of the speed of light in Roemer's method (whoever heis), is regarded as the Doppler affect. The period o
The magnetic induction at a point 15 cm from a long straight wire carrying a current is 4 X 10 -6 T Compute the current. (J - 12) B = μ o I/2πa I = 2πa X B/μo Current I
Que: In the circumstances of charge distributed on a line segment what do we mean by the expression linear charge density λ(x)? Note that λ(x) is to be study lambda of x mea
Light from a monochromatic source of wavelength 4000A 0 is incident on a grating having 5000 rulings / cm. The spectrum is focused on a screen by a lens of focal length
1. A statement of the scientific hypothesis/hypotheses you have decided to address in your analyses, with a rationale for each. From the rational of the study, the amount of vit
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