List any four types of resistors. Give one application of each.

1 Answer

Answer :

Ans: Types of resistors with their applications: i) Carbon composition resistor: Potential divider, welding control circuits, power supplies, H. V. and high impulse circuits as switching spark circuits, radio/TV receiver circuit, biasing circuits of transistor, amplifier circuits, zener voltage regulator. ii) Metal film resistor: Transmitter circuits, Oscillator, telecommunication circuits, testing circuits, measurement circuits, audio amplifier circuits, Modulator and Demodulator circuits. iii) Wire wound resistor: Power amplifiers, Zener voltage regulators, radio / TV receiver circuit, High power resistance in DC power supplies, measurement circuits. iv) H V Ink Film type resistor: C R O circuits, Radar, medical electronics. v) Carbon film resistors: used for electronic circuits vi) Cermet resistors: used in printers, automotive, computers, cell phones & battery chargers. 

Related questions

Description : State any two types of resistors. Give one application of each.

Last Answer : Types of resistors with their applications: i) Carbon composition resistor: Potential divider, welding control circuits, power supplies, H. V. and high impulse circuits as switching spark ... vi)Cermet resistors: used in printers, automotive, computers, cell phones & battery chargers.

Description : Give the classification of resistors. List any four materials used for manufacturing of resistors.

Last Answer : Materials used for manufacturing of resistors: Carbon Composition Resistor (carbon dust or graphite paste) Film or Cermet Resistor (conductive metal oxide paste) Nichrome, enamel LDR- Cadmium sulphide, Cadmium selenide, lead sulphide TDR- Cobalt, Nickel, Manganese

Description : List different types of resistors and capacitors.

Last Answer : Types of Resistors: 1. Carbon Composition resistor 2. Thin film resistor 3. Thick film resistor 4. Wire wound resistor 5. Thermistor 6. LDR 7. Photo resistor Types of capacitors: 1 ... capacitor 2. Variable capacitor 3. Air ganged capacitor 4. PVC ganged capacitor 5. Trimmer capacitor

Description : what is equivalent resistance when four 4 Ohm resistors are connected in i) series ii) parallel

Last Answer : equivalent resistance

Description : Consider a circuit with four resistors in series connected to a voltage source. What happens to the voltage across each resistor, if the value of each of the resistors is doubled? A) It will double B) It will remain the same C) It will be halved D) It will become zero

Last Answer : Consider a circuit with four resistors in series connected to a voltage source. What happens to the voltage across each resistor, if the value of each of the resistors is doubled? A) It will double B) It will remain the same C) It will be halved D) It will become zero

Description : Consider a circuit with four 10 Ω resistors connected in parallel and the current flowing through the circuit is 5 A. What will be the current if the above 4 resistors are connected in parallel? A) 5 A B) 50 A C) 500 A D) None of these

Last Answer : Consider a circuit with four 10 Ω resistors connected in parallel and the current flowing through the circuit is 5 A. What will be the current if the above 4 resistors are connected in parallel? A) 5 A B) 50 A C) 500 A D) None of these

Description : Four identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be

Last Answer : Four identical resistors are first connected in parallel and then in series. The resultant resistance of the first combination to the second will be  1 / 16 times.

Description : Four equal resistors are connected in parallel, each resistor has an ohmic value of 100 ohms, what is the equivalent resistance?

Last Answer : 25 ohms

Last Answer : Req= (1/1200 +1/560 + 1/2.1)^-1        = 2.1 ohms RT= 2.1 + 7.8      = 9.9 ohms IT = V/R = 24/9.9                = 2.4 A Veq= R I =  2.1 2 ... 7.8         = 12.096 w                 = 44.928 w _________________________________________ By: Ellis-Junior Kamatjipose [email protected]

Description : What is the total resistance if 5 resistors of 20 Ω each are connected in series? A) 100 Ω B) 4 Ω C) 20 Ω D) None of these

Last Answer : What is the total resistance if 5 resistors of 20 Ω each are connected in series? A) 100 Ω B) 4 Ω C) 20 Ω D) None of these

Description : A two-phase generator is connected to two 90Ω load resistors. Each coil generates 120 V ac. The value of current flowing through the common neutral line will be: A. 1.33 A B. 1.88 A C. 2.66 A D. 1.77 A

Last Answer : A two-phase generator is connected to two 90Ω load resistors. Each coil generates 120 V ac. The value of current flowing through the common neutral line will be: 1.77 A

Description : What is the equivalent resistance of a network having 5 resistors of each 10ohm connected in parallel?  (A) 10 Ohms (B) 50 Ohms (C) 500 Ohms (D) 2 Ohms 

Last Answer : D) 2 ohms Solution: 1/Rt = (1/R)(n) 1/Rt = (1/10) (5) 1/Rt = 5/10    Rt = 2 ohms

Last Answer : 4 different combinations may be obtained with three resistors, each having the resistance R.

Description : State the function of a contactor in a power circuit of locomotive. List different types of it and state one application of each.

Last Answer : Ans: Contactor in power circuit of locomotive is used to connect relevant sections for operation. Connecting or disconnecting the power circuit at different conditions of operation and at different locations. ... heavy power currents. 3) Cam & roller operated - used for group switching.

Description : List any three types of capacitor. Give one application of any one type.

Last Answer : Ans: Types of capacitors and their applications:  i) Air capacitors: Radio tuning applications, Antenna tuning, RF matching networks, MRI medical scanners.  ii) Paper capacitors: High ... Filters, Timing and precision coupling circuits, Switching power supplies, AC applications to avoid corona.

Description : List the basic types of rubber. Give one application of each. 

Last Answer : Basic types of rubber with application  A) Natural rubber Applications :- 1) Belts, 2. Shoe, 3. Coatings, 4. Packaging, 5. Soles, 6. Automobile tyres, 7. Seals and gaskets, 8. Chemical ... 7. Tubeless tire liners, Inner tubes 8. Stoppers for glass bottles, 9. Medicine bottles, and pharmaceuticals 

Description : List specifications of resistors and explain any two.

Last Answer : List specifications of resistors are as follows: 1. Maximum voltage rating. 2. Power rating. 3. Temperature co- efficient of resistance. 4. Tolerance. 5. Operating temperature. 6. Ohmic ... form of energy. Tolerance: It is defined as deviation from nominal value of resistance in percent.

Last Answer : If four 90 ohm resistors are connected in series across an 18 V source, the current equals 50 mA.

Description : List four material handling devices and also write one application of each.

Last Answer : 1. Fork lift truck - To move and stack material at height. 2. Cranes - To lift heavy stones at height. 3. Conveyor - To move cement bags at a short and fixed distance. 4. Pipelines - To move chemical from store to storage tank. 

Description : List any four current collectors for overhead system. State application of each.

Last Answer : Current Collectors for Overhead System With Their Application: 1. Trolley (Pole) collector: It is used for trolley buses having speed range from 20kmph to 32kmph. 2. Cable collector: This ... used for main line service locomotives, urban trains, suburban trains etc. having higher speed range.

Description : How many types of resistors ?

Last Answer : 2 types of resistors .

Description : State any two features of carbon composition resistors.

Last Answer : Features of Carbon composition resistance: i) Low cost ii) Wide resistance range ( ohm to mega ohm) iii) Wide range of working voltage iv) Simple in construction 

Description : The colour band on the extreme left in general purpose fixed resistors represents: A) Tolerance B) First significant digit C) Wattage Rating D) Voltage Rating

Last Answer : The colour band on the extreme left in general purpose fixed resistors represents: First significant digit

Description : When two 100 kΩ resistors are connected in parallel, net resistance is

Last Answer : When two 100 kΩ resistors are connected in parallel, net resistance is 50 kΩ

Description : Three identical resistors connected in star consume 5000 W. If the resistors are connected in delta across the same supply, the power consumed will be

Last Answer : Three identical resistors connected in star consume 5000 W. If the resistors are connected in delta across the same supply, the power consumed will be 15000 W

Description : What is the percentage error when 3 resistors with ratings 100 Ω at 5%, 150 Ω at 6% and 250 Ω at 8% respectively, are connected in series? A) 6.33% B) 6.80% C) 19% D) None of these

Last Answer : What is the percentage error when 3 resistors with ratings 100 Ω at 5%, 150 Ω at 6% and 250 Ω at 8% respectively, are connected in series? A) 6.33% B) 6.80% C) 19% D) None of these

Description : When three resistors with unequal values are connected in parallel, _______ A) The current across the resistors is the same  B) The voltage drop across the resistors is the same C) The voltage drops across the resistors is proportional to the resistance of each resistor D) None of these

Last Answer : When three resistors with unequal values are connected in parallel, The voltage drop across the resistors is the same

Description : Which of the following is true with a series circuit having resistors of different values? A) The total resistance of the circuit is the sum of the individual resistances B) The current across each ... ) The voltage drop across each resistor depends on the value of the resistor D) All the above

Last Answer : Which of the following is true with a series circuit having resistors of different values? A) The total resistance of the circuit is the sum of the individual resistances B) The current across ... voltage drop across each resistor depends on the value of the resistor D) All the above

Description : Variable resistors are_____. A. Wire wound resistors B. Thin film resistors C. Thick film resistors D. All of the above.

Last Answer : Variable resistors are Wire wound resistors.

Description : Tolerance value of Gold of colour coded resistors is _______. A. 10% B. 5% C. 2% D. 20%

Last Answer : Tolerance value of Gold of colour coded resistors is 5%. 

Description : Which of the following series combinations of resistors dissipates the most power when connected across a 120 V source? A. One, 220Ω resistor B. Two, 220Ω resistors C. Three, 220Ω resistors D. Four, 220Ω resistors

Last Answer : Which of the following series combinations of resistors dissipates the most power when connected across a 120 V source?  One, 220Ω resistor

Description : A string of five resistors connected in series is connected across a 6 V battery. Zero voltage is measured across all the resistors except the third resistor. The voltage across the third resistor is: A. 0 V B. 1.2V C. 6V D. 0.6V

Last Answer : A string of five resistors connected in series is connected across a 6 V battery. Zero voltage is measured across all the resistors except the third resistor. The voltage across the third resistor is: 6V

Description : Three resistors of 4 Ω, 6 Ω and 9 Ω are connected in parallel. Which resistor consumes the maximum power?  (A) 4 Ω (B) 6 Ω (C) 9 Ω (D) 17 Ω

Last Answer : (c) 9 ohm

Last Answer : Variable resistors are Wire wound resistors.

Last Answer : Two 1 kilo-ohm 1/2 W resistors are connected in series. Their combined resistance value and wattage will be 2 kΩ, 1 W.

Description : Three equal resistors connected in series across a source of emf together dissipate 10 watts of power. What would be the power dissipated in the same resistors when they are connected in parallel across the same source of emf? 

Last Answer : Three equal resistors connected in series across a source of emf together dissipate 10 watts of power. 90 watts would be the power dissipated in the same resistors when they are connected in parallel across the same source of emf.

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

Last Answer : Wire-wound resistors are unsuitable for use at high frequencies because they exhibit unwanted inductive and capacitive effects.

Description : List any four errors in induction type energy meter. Give method of compensation for each.

Last Answer : Errors in Induction Type Energy Meter with their Compensation:  1) Error due to friction: This error can be compensated by the additional shading band provided on the shunt electromagnet.  2) Phase ... error: This error can be compensated by providing a flux diverter' to the current magnet. 

Description : Calculate the equivalent resistance between points A and B in each of the following networks of resistors :

Last Answer : Calculate the equivalent resistance between points A and B in each of the following networks of resistors :

Description : A `5 Omega` resistor is connected in series with a parallel combination of n resistors of `6 Omega` each. The equivalent resistance is `7 Omega`. Find

Last Answer : A `5 Omega` resistor is connected in series with a parallel combination of n resistors of `6 Omega ... The equivalent resistance is `7 Omega`. Find n.

Description : Three resistors each of 2 ohm are connected together in a triangular shape. The resistance between any two vertices will be

Last Answer : Three resistors each of 2 ohm are connected together in a triangular shape. The resistance between any two ... 3//4Omega` C. `3Omega` D. `6Omega`

Description : When troubleshooting a console circuit card which is suspected of being faulty, the first step would be to _____. A. pull the card and measure the value of all resistors B. check for the ... for burned components D. check for continuity of circuit board traces and then the gain of each transistor

Last Answer : Answer: C

Description : What power would be consumed in EACH of the branch resistors of the circuit shown in the illustration if the source is 30 volts, the resistance for R1 is 10 ohms, R2 is 10 ohms and R3 is 10 ohms? EL-0032 A. 5 watts B. 10 watts C. 20 watts D. 40 watts

Last Answer : Answer: B

Description : A series circuit consists of two resistors in series. R1 = 25 ohms and R2 = 30 ohms. The circuit current is 6 amps. What is the (a) source voltage, (b) voltage dropped by each resistor, (c) total power, and (d) power used by each resistor?

Last Answer : (a) 330 volts. (b) E1 = 150 volts. E2 = 180 volts. (c) 1.98 kilowatts. (d) P1 = 900 watts. P2 = 1.08 kilowatts component but in a parallel circuit total current divides among the available paths.

Description : Three equal resistors connected in series with a source of e m f together dissipate 10 W of power each. What will be the power dissipated if the same resistors are connected in parallel across the same source of e m f? a. 40 W b. 90W c. 100W d. 120W

Last Answer : b. 90W

Description : N resistors of each of resistance R when connected in series offer an equivalent resistance of 50 ohm and when reconnected in parallel the effective resistance is 2 ohm the value of R is

Last Answer : 25 ohms

Description : List different types of signals. State application of each.

Last Answer : Different Types of Signals: 1) Flag signals: This is shown by signalman if green flag is raised; it means to proceed with caution. Green flag shown down, it means there is track defect; ... green lamps indicate indications as in the 2-aspect system, and the yellow lamp shows the caution indication.

Description : State one application each for technically feasible LEM propelled transport system based on suspension used (any four). 

Last Answer : Ans: 1) Steel wheel on steel rail --- surface transportation 2) Rubber wheel on road --- surface transportation 3) Flat surface on water --- crossing rivers 4) Levitation --- wheel less travel along pre-defined routs