This set of Basic Electronics Engineering Multiple Choice Questions & Answers (MCQs) focuses on “Passive Circuit Components – Fixed Resistors”.
1. The resistance of the fixed resistors _______
a) Cannot be varied
b) Can be varied
c) Won’t be a fixed value
d) Easily varied
View Answer
Explanation: A resistor of normal resistance can restrict the flow of electricity but the resistance of the fixed resistors cannot be varied. The only disadvantage with fixed resistor is they only have one value so to have another value we must change the resistor.
2. The fixed resistors restricts the flow of current up to _____
a) Infinite level
b) Certain level
c) Any range
d) Variable range
View Answer
Explanation: The resistance of the fixed resistors only restrict the flow of current to, a certain level. An ideal fixed resistor provides only constant resistances under any conditions. They cannot be varied.
3. The most frequently used resistance values of the fixed resistors include ____
a) 100KΩ
b) 1KΩ
c) 3KΩ
d) 5KΩ
View Answer
Explanation: The mostly frequently used fixed resistors have the resistances of 100KΩ,10KΩ,100Ω,10Ω.The cost of the fixed resistors are more than that of variable resistors because for every other resistance we need to buy new resistors.
4. What is the symbol of fixed IEC (International electro technical commission) standard resistor?
a) 
b)
c) 
d) 
View Answer
Explanation: The symbol of the fixed IEC standard resistor is
and the symbol of American standard fixed resistors is .The symbol of the capacitor is .5. In the metal wound resistor, the metal core acts as ______
a) Conducting material
b) Resistive material
c) Non-resistive element
d) Non-conducting material
View Answer
Explanation: The Non-conducting material in the metal wound resistors is metal core whereas, the metal wire wound around the metal core acts as resistive element. The metal core cannot conduct the electricity.
6. In metal wound resistor, the metal wires are made up of ______
a) Manganin
b) Copper
c) Chromium
d) Manganese
View Answer
Explanation: The Manganin is used to make the metal wires in metal wound resistors. They can also be made with Nichrome. The Manganin and Nichrome are the resistive elements. They oppose the flow of current.
7. The carbon composition resistors is made from _____
a) Mixture of ceramic and copper
b) Mixture of ceramic and clay
c) Mixture of carbon and ceramic
d) Mixture of carbon and clay
View Answer
Explanation: Mixture of carbon and ceramic is used to make the carbon composition resistors. It is having a cylinder embedded with metals and caps. The metals and caps are used to reduce the noise.
8. In the carbon film resistors, the ceramic substrate acts as _____ to current.
a) Conducting material
b) Insulating material
c) Resistive element
d) Neutral element
View Answer
Explanation: The ceramic substrate acts as Insulating material towards current and the carbon film acts as Resistive elements. Insulators are the materials that cannot conduct electricity at all. Insulators will have very high band gap.
9. The carbon film resistors produce less noise than the _____
a) Metal film
b) Metal wound resistors
c) Carbon composition resistors
d) Metal glaze resistors
View Answer
Explanation: The carbon film resistors produces less noise than that of Carbon composition resistors because the metal caps and the leads made of copper are fixed at the both ends. As, the metal and caps are fixed both side they control the noise.
10. In the metal film resistors, the film is constructed by using _____
a) Antimony
b) Bismuth
c) Copper
d) Aluminium
View Answer
Explanation: Nickel Chromium or Tin or Antimony is used to construct the metal film resistors. In carbon film resistors, the film is made up of the carbon that acts as the resistive material.
11. Metal film resistor have _______
a) High temperature co-efficient of resistance
b) Low temperature co-efficient of resistance
c) Moderate temperature co-efficient of resistance
d) No temperature co-efficient of resistance
View Answer
Explanation: The temperature co-efficient of resistance is shortly known as TCR. The rate at which the resistance of the material changes with increase in temperature is called TCR. The metal film resistor has low TCR.
12. In the oxide film resistor, the film is constructed by _______
a) Copper oxide
b) Aluminium oxide
c) Peroxide
d) Tin oxide
View Answer
Explanation: In the oxide film resistor, the film constructed by the tin oxide.The resistors operates at high temperature. The high temperatures can be barred by the Tin oxide easily. Peroxides are mostly liquids or gases.
13.______ are used to restrict the flow of electric current to certain level in metal glaze resistor.
a) Mixture of glass powder and carbon
b) Mixture of ceramics and carbon
c) Mixture of glass powder and metal particles
d) Mixture of metal particles and ceramics
View Answer
Explanation: The Mixture of glass powder and metal particles is used in metal glaze resistor that restricts the flow of current. The Mixture of ceramics and carbon are used in carbon composite resistors.
14. Foil resistors are the most _______
a) Accurate
b) Inaccurate
c) Unstable
d) Rarely used
View Answer
Explanation: Foil resistors are the most Accurate resistors. They are also very stable components. As much as the resistor is accurate, the resistor will be more ideal one. Among all the fixed resistors, foil resistors are the ideal ones.
15. The foil resistors are also called as ______
a) High precision resistor
b) Low precision resistor
c) Moderate precision resistor
d) No precision resistor
View Answer
Explanation: The foil resistors are also called as the Low precision resistors because they produce low noise when compared to the other fixed resistors. It limits the electric current and the opposition current flow provided by a very thin piece of meter.
Sanfoundry Global Education & Learning Series – Basic Electronics Engineering.
To practice all areas of Basic Electronics Engineering, here is complete set of 1000+ Multiple Choice Questions and Answers.
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