Unit 10 Enineering Core MCQ

Which type of system block takes a signal from the real-world environment and turns it into an electrical or electronic signal?

• Driver

• Input

• Output

• Process

Which of the following logic gates produces a high output signal when either or both input signals are high, and a low output signal when both input signals are low?

• NAND

• AND

• NOT

• OR

Which of the following is used as a process block in a control system?

• Motor

• Sensor

• Switch

• Timer

Which of the following process blocks keep an output signal high until it is reset?

• Comparator

• Counter

• Latch

• Pulse unit

Which of the following process blocks adds up the number of pulses received?

• Comparator

• Counter

• Latch

• Pulse unit

Which of the following logic gates produces a high output signal when both input signals are high, and a low output signal when either or both input signals are low?

• AND

• NAND

• NOT

• OR

Which type of system block takes an electrical or electronic signal and turns it back into a signal from the real-world environment?

• Driver

• Input

• Output

• Process

Which of the following describes a control system with a feedback loop?

• Closed loop system

• Closed process system

• Open loop system

• Open process system

Which of the following is best described as a mathematical representation of the contents of each block within a systems diagram?

• Feedback loop

• Reference signal

• Summing point

• Transfer function

Which type of waveform is used to represent a digital signal?

• Sawtooth

• Sinusoidal

• Square

• Triangular