# Recent questions tagged wire

State functions of ; i) Cable box ii) Guard wire iii) Shackle insulator iv) Stay wire used in service connection

The function of steel wire in ACSR conductors is (A) To take care of surges. (B) To reduce corona. (C) To reduce inductance. (D) To provide additional mechanical strength

A fuse wire should have :  (A) Low specific resistance and high melting point (B) Low specific resistance and low melting point (C) High specific resistance and high melting point (D) High specific resistance and low melting point

Increasing the number of turns of wire on the secondary of a transformer will  (A) Decrease the secondary current (B) Increase the primary current (C) Have no effect on the secondary current (D) Increase the secondary current

For a round wire, the approximate value of fusing current is given by

Aluminium is not used as winding wire for the armature of a dc machine because  (1) aluminium has low resistivity (2) a large winding space is taken by aluminium conductors and creates jointing problems (3) the thermal conductivity of aluminium is low (4) aluminium has low conductivity as compared to copper

lf the wire which is vertical to this page has electron flow downwards the conductor will have

Nichrome wire is an alloy of?

If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes?

The resistance of a few meters of wire conductor in closed electrical circuit is?

Wire-wound resistors are unsuitable for use at high frequencies because they?

A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span?

What happens when a current flows through a wire?

How do magnets and copper wire make electricity?