Fii-Electrical, Electronic and Control Engineering
FII-ELECTRICAL,ELECTRONIC AND CONTROL ENGINEERING
01FII-C2A-S04
1. An electrical component is connected across a 120 volt,60Hz,AC supply.What is the current drawn by the component if the impedance is 200 ohms? Ans: 0.060 Amperes
2. A lamp has a source voltage of 110 volts and a current of 0.9 amps. What is the resistance of the lamp? Ans: 122.22 Ohms
3. What power would be consumed in each of the branch resistors of the circuit if the source is 30 volts, the resistance for R1 is 10 ohms,R2 is 10 ohms,R3 is 10 ohms are connected in series? Ans: 10 Watts
4. If an AC motor is started and produces 25 horsepower,the KW meter reading will increase by: Ans: 18.65 Kw
5. Which of the following formulas listed is correct for determining the power? Ans: P=(E)(E)/R
6. A magnetic blow out coil in a DC motor controller contactor functions to: Ans: Prevent contact melting
7. The device most commonly utilizing the principle of electromagnetic induction is: Ans: Transformer
8. A current at which a magnetic-type overload relay tends to trip may be decrease by raising the plunger further into the magnetic circuit of the relay.This action will: Ans: Increases magnetic pull on the plunger and requires more current to trip the relay
9. A dashpot mechanism in a magnetic-type,time delay overload relay functions to: Ans: Prevent the relay from operating when normally large starting currents are encountered
10. The opposition to the establishment of magnetic lines of force in a magnetic circuit is called the circuit’s: Ans: Reluctance
11. The basic control action of a magnetic amplifier depends upon: Ans: Changes in inductance
12. The purpose of a magnetic type relay
01FII-C2A-S04
1. An electrical component is connected across a 120 volt,60Hz,AC supply.What is the current drawn by the component if the impedance is 200 ohms? Ans: 0.060 Amperes
2. A lamp has a source voltage of 110 volts and a current of 0.9 amps. What is the resistance of the lamp? Ans: 122.22 Ohms
3. What power would be consumed in each of the branch resistors of the circuit if the source is 30 volts, the resistance for R1 is 10 ohms,R2 is 10 ohms,R3 is 10 ohms are connected in series? Ans: 10 Watts
4. If an AC motor is started and produces 25 horsepower,the KW meter reading will increase by: Ans: 18.65 Kw
5. Which of the following formulas listed is correct for determining the power? Ans: P=(E)(E)/R
6. A magnetic blow out coil in a DC motor controller contactor functions to: Ans: Prevent contact melting
7. The device most commonly utilizing the principle of electromagnetic induction is: Ans: Transformer
8. A current at which a magnetic-type overload relay tends to trip may be decrease by raising the plunger further into the magnetic circuit of the relay.This action will: Ans: Increases magnetic pull on the plunger and requires more current to trip the relay
9. A dashpot mechanism in a magnetic-type,time delay overload relay functions to: Ans: Prevent the relay from operating when normally large starting currents are encountered
10. The opposition to the establishment of magnetic lines of force in a magnetic circuit is called the circuit’s: Ans: Reluctance
11. The basic control action of a magnetic amplifier depends upon: Ans: Changes in inductance
12. The purpose of a magnetic type relay