MA quiz 2

The internal resistance of an ammeter should be

• High

• Medium

• Very small

• Infinity

Precision is a measure of

• How close each measurement is to one another

• How good the actual measurement is

• The number of significant figures that the results should be expressed to

• How close measurement is to the true value

Strain gauge is used

• To convert sound energy into electrical energy

• To sense temperature

• To convert mechanical displacement into a change in resistance

• To convert electrical current into a mechanical displacement

What is the output voltage for the circuit shown in the figure

• 12V

• 32V

• 24V

• 18V

6. The definition of second (unit of time) is based on the cesium

beam atomic clock. This statement is related to:

• Working standards

• International standards

• Primary standards

• Transfer standards

7. For a normal distribution with a mean of 55 and a standard deviation of 4, what is the probability of selecting a score either greater than 56 or less than 51?

• 0.7574

• 0.0637

• 0.5600

• 0.2426

The output voltage from the next circuit is

• v0 = -(k + 1) E/4

• v0 = -2 k R i

• v0 = -k E/2

• v0 = -(k + 1) E/2

The value ILSB for a converter with 6 bits and UR = 32V is

• 0.5V

• 1.25V

• 0V

• 0.25V

In a flash analog-to-digital converter, the output of each comparator is connected to an input of a

• demultiplexer

• decoder

• multiplexer

• priority encoder

An ideal OA means

• Zout -> inf

• aCM -> 0

• Zi -> 0

• v+ != v-