What metals contained in brass alloy?
What is the unit of power?
The voltage generated by a generator is determined by the equation:
. As per Ohm's law statement in the circuit, current is directly proportional to........
Calculate slip of an induction motor if it has 4 poles, 50Hz, rotor speed is 1400 rpm.
The given Wheatstone bridge is balanced when P= 100 2; Q=1k2 and S = 120 £2. Calculate the value of the unknown resistance.
In d.c. generators, lap winding is used for
What is the centre of gravity of a rectangular body?
If a 200 watts lamp is connected across a 250 volt source then what will be the circuit current ?
The electric motor generally used in house hold food mixers is
The principle of operation of an induction motor is based on:
An appliance has a resistance of 100 ohms, takes 2 amperes. What is the power consumed by the appliance?
What is the profit amount, if the i - phone cost price is Rs.50000/- and selling price is Rs.70000/-?
Motor used in electric traction is
Which type of fire extinguisher must NOT be used for electrical base fire?
The armature of d.c. generator is laminated to
A fuse in a circuit provides protection against.....
The RMS value of emf induced per phase in alternator is given as .........
What is the formula for kinetic energy?
Calculate the hot resistance value of the lamp 200 watts/250 volts?
Which type of resistor is used for Arc quenching protection in circuit breakers?
The speed of a series motor at no-load is
The specific resistance of a substance depends on
A synchronous motor is started on:
The number of electrical degrees which passes through in one revolution of a 6 pole alternator is:
What is the ratio of 4 kg to 800 grams?
The fixed value Carbon Resistors are generally not more than...... Watts
What is the power input to an electric heater, that draws 4 amperes at 250 volts supply source?
Which law states that the sum of the currents meeting at junction is equal to zero?
Which is the example for negative temperature coefficient substance?
What is the purpose of a lubricant?
What is the function of a centrifugal switch?
The back emf of a DC motor depends on the
Which material is having negative temperature coefficient? (
What is the S.I unit of specific resistance?
A capacitor-start, single-phase motor will usually have a P.F. of:
What are the two classifications of system of units?
Which type of fire extinguisher is used for fire on electrical equipment?
The direction of rotation of a synchronous motor can be reversed by reversing
The ELCB expansion form is
A 6 pole, 50 Hz, 3 phase induction motor has a full load speed of 950 R.P.M. At half load, its speed would be
The 10 pole D.C generator has 960 armature conductors and a flux per pole of 20 mwb running at 600 rpm. Calculate the e.m.f generated when the armature is connected in simplex wave winding?
Hack Saw blades are made up of......
. The formula to find EMF induced (E) in DC generator is
the distance between two adjacent teeth of hack saw blades are called as
What is the possible range to measure the size of the wire in a Standard Wire Gauge (SWG)? |
which metal is used in electric lamp filament
Calculate the value of resistance by colour coding method.
Armature cores are commonly made of
What is the radius of a circle whose diameter is 44 cm?
What is the unit of strain?
What is the centre of gravity of a right circular cone from its base?
Squirrel-cage induction-motor differs from a slip-ring induction-motor as it has no
Which affects the centre of gravity of the object?
