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