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- Resistance of a wire is r ohms. The wire is stretched to double its length, then its resistance in ohms is
- What happens to the resistance of a wire when its length as well as the cross-sectional area are doubled?
- Resistance of a copper wire decreases when ......................increases
- A wire of resistance R has it length and cross-section both doubled. Its resistance will become
- If Poisson's ratio of a resistance wire strain gauge is 1.8, then neglecting piezo-resistive effects, its Gauge
- If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes?
- When a dipole antenna of 1/8 length has an equivalent total resistance of 1.5 Watt then the efficiency of the
- Two copper conductors have equal length. The cross-sectional area of one conductor is four times that of the other...
- What happens to the resistance when the current increases?
- What is the resistance of a 160 m wire with a uniform diameter of 0.28 mm, if the specific resistance is
- The hot resistance of a tungsten lamp is about 10 times the cold resistance. Accordingly, ...
- if voltage is 230 Volts , frequency is 50 Hz and current is 1 ampere then what will be the resistance?
- If resistance is 8 Ohm and current is 16 ampere then what will be the voltage and power?
- When alternator excitation increases and machine is operating at lagging power factor then
- What is resistance wire made of?
- If frequency is decreased 4 times, then skin depth of an Electromagnetic wave inside a conductor will be : ...
- If the diameter of the current carrying conductor increases then the corona loss
- A magnetic circuit has effective iron length of 100 cm and it is wound with 800 turns of wire carries 1 A. Find the magnetic field strength.
- Three 3 ohm resistors are connected to form a triangle. What is the resistance between any two of the corners?
- Two heater wires of equal length are connected first in series and then in parallel. The ratio of heat generated
- If B is the flux density, I the length of conductor and v the velocity of conductor, then induced e.m.f. is given by?
- A copper wire of length l and diameter d has potential difference V...
- In a three phase half wave rectifier feeding resistive load, if the input source is a three phase 4 wire system
- A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart...
- A drawn wire of resistance 5 Q is further drawn so that its diameter becomes one-fifth of the original. ...
- A wire of 0.14 mm diameter and specific resistance 9.6 micro ohm-cm is 440 cm long. The resistance of the wire will be
- If both the number of turns and core length of an inductive coil are doubled, then its self inductance will be
- Describe the importance of three wire and four wire configuration for RTD with suitable circuit diagram.
- In a certain three -wire Y -connected generator, the phase voltages are 2 kV. The magnitudes of the line...
- When ‘n’ resistances each of value ‘r’ are connected in parallel, then the resultant resistance is ‘x’...
- In an induction motor, if the rotor resistance is equal to stand-still reactance then the maximum torque is_________.
- If the insulation resistance of a cable of length 10 km is 1 mega ohm, its insulation resistance
- The current in a 200 mH coil increases from 2 to 5 A in 0.1 Second. What is rate of change of current?
- A nichrome wire used as heater coil has the resistance of 1 ohm/m. For ...
- If a rigid body is in equilibrium under the action of three forces, then?
- While Lilo was playing with a toy tractor, she rolled it over an ink drop. The image on the right shows the ink drop and the marks on the floor left by tractor’s wheels. The diameter of the back wheel of the tractor is 1.5 times that of its front wheel. What is the number of revolutions made by the front wheel between the ink drop and the last mark?
- Differentiate between two and three wire control.
- In a 3-phase 4-wire distribution system three unbalanced but equal magnitude impedances are connected...
- As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor ………..
- If resistance is 20 Q. and inductance is 27 in a R-L series circuit, then time constant of this circuit will be?
- A 10A DC Ammeter has a resistance of 0.1 Ω is to be extended to 50 A, the required shunt wire is
- The resistance of a few meters of wire conductor in closed electrical circuit is?
- If the field circuit resistance of a d.c. generator exceed its critical value, then the generator : -
- If the emitter resistance ‘Re ’ in a transistor amplifier is removed, then
- When an antenna of input resistance 73 ohm is connected to a 50-ohm line and if the losses are ignored then
- In a D.C. generator in case the resistance of the field winding is increased, then output voltage will?
- What is the diameter of the GI pipe through which the earth wire needs to be taken out?
- A series RLC circuit resonate at 200 Hz. If the capacitance is increased to four times, the circuit will be in ...
- When the separation between two charges is made four times, the force between them...
- When the graph of a network has six branches with three tree branches then the minimum number of

...