1) The displacement of a mass attached to a spring in mechanical system is corresponding to _______ in the electrical system a. inductance b. resistance c. capacitance d. current
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2) Which of the following statements are true for block diagrams? 1. Block diagrams are the pictorial representation of the system 2. The complicated systems can be easily represented by connecting different blocks 3. Block diagram represents the relationship between input and output of the system a. Statements (1) and (2) b. Statements (2) and (3) c. Statements (1) and (3) d. Statements (1), (2) and (3)
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3) A corresponding block of an element is drawn by inserting ________ of that element inside the block. a. the value of corresponding input b. a transfer function c. the value of corresponding output d. the name
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4) What is/are the maximum number of arrow/s (Input/s) allowed to go inside the block? a. One b. Two c. Three d. Four
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5) The task of time sharing, in which large number of data signals are sent through cables or buses, is performed by____ a. sensors or transducers b. central processing unit (CPU) c. multiplexer d. analog to digital converter
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6) Data acquisition of all the physical quantities in the real world is done in a. the analog mode b. the digital mode c. either analog mode or digital mode d. none of the above
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7) According to Nyquist theorem, the sampling rate should be _________ as fast as the highest frequency of the signal being measured or sampled. a. twice b. thrice c. ten times d. hundred times
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8) Digital to Analog Conversion is ______________ Analog to Digital Conversion. a. less complex than b. more complex than c. as complex as d. unpredictable
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9) Micro-controllers are ________________ than the PLCs. a. bulky and expensive b. bulky but cheaper c. portable and cheaper d. portable but expensive
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10) How is the noise immunity of PLCs to electrical noises as compared to that of conventional relay controllers? a. poor b. excellent c. as good as noise immunity of conventional relay controllers d. unpredictable
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