Suppose there are three light switches outside a room. Inside is a single light bulb, controlled by one of the three switches. You need to determine which switch operates the bulb. You can turn the switches on and off as many times as you wish (they are all off to begin with), but may only enter the room once. There is no one there to help you. The door to the room is closed, and there are no windows, so you cannot see inside. How can you discover which switch operates the bulb?
Submitted by: AdministratorDo the following steps:
☛ 1. Turn ON two switches, and leave one OFF.
☛ 2. Wait a few minutes.
☛ 3. Turn one switch from ON to OFF. One is now ON and two are OFF
☛ 4. Enter the room. - If the light is ON, it is controlled by the switch you left ON. - If the light bulb is OFF, touch it. If it is warm it is controlled by the switch you turned ON and OFF. If it is cold, it is controlled by the switch you never turned on.
Submitted by: Administrator
☛ 1. Turn ON two switches, and leave one OFF.
☛ 2. Wait a few minutes.
☛ 3. Turn one switch from ON to OFF. One is now ON and two are OFF
☛ 4. Enter the room. - If the light is ON, it is controlled by the switch you left ON. - If the light bulb is OFF, touch it. If it is warm it is controlled by the switch you turned ON and OFF. If it is cold, it is controlled by the switch you never turned on.
Submitted by: Administrator
Read Online Regulator Tester Telecommunications Job Interview Questions And Answers
Top Regulator Tester Telecommunications Questions:
☺ | How much time do you need to join the organization Regarding Regulator Tester Telecommunications? |
☺ | What do you aspire to be? |
☺ | What is your typical way of dealing with conflict? Give me an example? |
☺ | You are not given the tools you need to be successful. How would you change that Regarding Regulator Tester Telecommunications? |
☺ | Your coworker highlights your mistakes in front of everyone, how do you handle the situation? |
Top Telecom Engineering Categories
☺ | Telecom Interview Questions. |
☺ | GSM Interview Questions. |
☺ | Telecom General Interview Questions. |
☺ | CDMA Interview Questions. |
☺ | Telecom Protocols Interview Questions. |