simple burglar alarm is to be wired up in a house which has two access doors, A and B. Micro switches are used to detect whether the doors are open or closed with a logic level 0 detected when a door is closed and a logic level I transmitted when a door is open. The alarm system can also be activated ON and OFF through a concealed manual switch S. with the system activated; a logic level I is transmitted through switch S. A logic level 0 through switch S indicates that the system is OFF Devise an appropriate Boolean expression to represent the sound of the alarm F when the system is a

simple burglar alarm is to be wired up in a house which has two access doors, A and B. Micro switches are used to detect whether the doors are open or closed with a logic level 0 detected when a door is closed and a logic level I transmitted when a door is open. The alarm system can also be activated ON and OFF through a concealed manual switch S. with the system activated; a logic level I is transmitted through switch S. A logic level 0 through switch S indicates that the system is OFF Devise an appropriate Boolean expression to represent the sound of the alarm F when the system is a

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter6: Ground-fault Circuit Interrupters, Arc-fault Circuit Interrupters, Surge Protective Devices, Immersion Detection Circuit Interrupters, And Appliance Leakage Current Interrupters

Section: Chapter Questions

Problem 24R: Briefly explain the operation of an immersion detection circuit interrupter (IDCI)....

See similar textbooks

Similar questions

Question : with Eight LEDs with 74HC595. This code uses a shift register to use a single data pin to light up 8 LEDs. The code uses the command "bitSet" to set the light pattern. What is the value of the variable leds when the value of currentLED is 5? Hint: You can use Serial.begin(9600) in the setup and Serial.println(leds) in the loop to examine this value. Answer must be a numerical value
Choose the false statement. a. In SCR the gate is the controlling terminal b. SCR are used for high-power applications c. SCR is a controlled device d. SCR is a bidirectional device
Q3: Consider a digital counter that counts 5 to 0 when the reset button is 0 and go back to 0 when the reset button is 1. draw the state diagram and state table for the digital control circuit of such a digital counter?
3% Q₁. Fill in the blanks with suitable word(s). 1. An SCR conducts in - ----- direction A. bi B. two C. reverse D. forward E. one 2. Once an SCR is switched ----, it remains latched removed. -----, even when the gate signal is A. on B. off C. down D. up E. always. An SCS is like an SCR, except that it has --- gates A. two B. three C. four D. five E. no. 4. The gate signal necessary to fire the GTO is ------- the SCR gate signal. 1. larger than B. smaller than C. much larger than D. much smaller than E. similar to 5. computer applications and phase control are applications of A. GTO B. diode C. transistor D. SCR E. LASCR 6. In The UJT emitter curves, the the value of VBB, the ------ ---- the value of (V₂) required to fire the component. A. Lower B. much lower C. higher D. much higher E. smaller B
4. A/An can be described as an imaginary device that exists only in the logic of the computer. a. internal relay b. limit switch C. I/O track d. phototransistor 00nmmended nractice when installing PLCS?
16. What is the two's complement of 1011100111? 17. Explain function of each element in Figure 3. (Register A, B, C, Clock, Carry out,D, C, Q, PRE, S, CI, CO) Subtractor Circuit Register A Register C Register B PRE Carry Out (Sign Bit) CI CO Clock- Figure 3 18. In the Figure 4, Register A is 1011 and Register B is 0010. a. What are the contents of register C after 2 clock pulses? b. What is the output of flip flop (Q) after the second clock pulse? c. What is the output of flip flop (Q) after the third clock pulse? d. What are the contents of register C after 5 clock pulses? Adder Circuit Register A Register C Register B B CLR CI CO Q Clock Figure 4 19. The serial adder required ten clock pulses to add two, five bit binary numbers. (True or false. İf it is false write correct one .) 8.
what are the logic states of the microcontroller if the switch is open?
Briefly explain the operation of an immersion detection circuit interrupter (IDCI). ___________________________
what are the logic states of the microcontroller if the switch is off ?
5. Which of the following statements is true ? 1.There are only Common Cathode displays. 2.There are only Common Anode displays 3.There are Common Cathode and Common Anode displays 6. What is the output when decimal numbers are converted into BCD switch when No. 6 is pressed ? 1. 1001 2. 0110 3. 1000 7. Construct a 4 -16 decoder using two pieces of IC74138.
QUESTION 2 What will this program rung do? (assume that nothing else in the program is affecting this output..) E1/0 3E 0:2/1 Pushbutton Light Green 0:2/1 Light Green Hint: Remember that the program scan goes from left to right, top to bottom. O The light will never turn on. The light will quickly flash on and off. O When you push the button the light will turn on, but it will turn off when you release the button. O When you push the button, the light will turn on. When you release the button, the light will stay on.
Fill the blank with suitable answer. 5. The decimal equivalent of 1E0.2A H is __________________. 4. The logic of two voltage levels 5V and 0V in a Negative logic system is