Electrical Engineering Mcqs

International ohm is defined in terms of the resistance of________________?

• (A)  a column of mercury
• (B)  a cube of carbon
• (C)  a cube of copper
• (D)  the unit length of wire

Answer

Submitted By :Ali Uppal

A substance whose molecules consist of dissimilar atoms is called____________?

• (A)  semi-conductor
• (B)  super-conducto
• (C)  compound
• (D)  insulator

Answer

Submitted By :Ali Uppal

The number of electrons in the outer most orbit of carbon atom is___________?

• (A)  3
• (B)  4
• (C)  6
• (D)  7

Answer

Submitted By :Ali Uppal

The ratio of mass of proton to that of electron is nearly_____________?

• (A)  1840
• (B)  1840
• (C)  30
• (D)  4

Answer

Submitted By :Ali Uppal

Voltage dependent resistors are used_____________?

• (A)  for inductive circuits
• (B)  to supress surges
• (C)  as heating elements
• (D)  as current stabilizers

Answer

Submitted By :Ali Uppal

Voltage dependent resistors are usually made from________________?

• (A)  Charcoal
• (B)  Silicon Carbide
• (C)  Nichrome
• (D)  Graphite

Answer

Submitted By :Ali Uppal

All good conductors have high____________?

• (A)  conductance
• (B)  resistance
• (C)  reluctance
• (D)  thermal conductivity

Answer

Submitted By :Ali Uppal

are the materials having electrical conductivity much less than most of the metals but much greater than that of typical insulators______________?

• (A)  Varistors
• (B)  Thermistor
• (C)  Semi-conductors
• (D)  Variable resistors

Answer

Submitted By :Ali Uppal

An open resistor, when checked with an ohm-meter reads_____________?

• (A)  zero
• (B)  infinite
• (C)  high but within tolerance
• (D)  low but not zero

Answer

Submitted By :Ali Uppal

A rheostat differs from potentiometer in the respect that it_____________?

• (A)  has lower wattage rating
• (B)  has higher wattage rating
• (C)  has large number of turns
• (D)  offers large number of tapping

Answer

Submitted By :Ali Uppal