Which one of the following devices is most often used for measuring electrical potential difference?

Which one of the following devices is most often used for measuring opposition to current flow in a circuit?

A

Ammeter

B

Voltmeter

C

Ohmmeter

D

Wattmeter

E

None of the above

Protective relays are devices that detect abnormal conditions in electrical circuits by measuring

A

current during abnormal condition

B

voltage during abnormal condition

C

constantly the electrical quantities which differ during normal and abnormal conditions

D

none of the above

A man wishes to cover his floor with tiles, each one measuring 3/4 inch by 2 inches. If his room is rectangular, measuring 12 feet by 18 feet, how many such tiles will he need?

A

144

B

1152

C

1728

D

20736

Out of the following flow measuring devices, which one incurs the maximum installation cost as well as pressure loss?

A

Flow nozzle

B

Venturimeter

C

Rotameter

D

Orificemeter

The water in a fish tank measuring 114 feet by 8 inches is 7 inches high. The water is poured into another tank measuring 14 inches by 20 inches. What will be the height of water, in inches, in the second tank?

A

1/4

B

2

C

3

D

1/12

Which of the following allows devices on one network to communicate with devices on another network?

A

multiplexer

B

gateway

C

t-switch

D

modern

E

None of the above

Devices on one network can communicate with devices on another network via a

A

file server

B

utility server

C

printer server

D

gateway

E

None of the above

Which of the following flow measuring devices is an area meter?

A

Venturimeter

B

Orifice meter

C

Anemometer

D

Rotameter

Which of the following fluid flow measuring devices can measure the largest flow rate?

A

V-notch

B

Rotameter

C

Orificemeter

D

Weir

Which programming language is often used for developing mobile apps for iOS devices, such as iPhones and iPads?

A

Java

B

Python

C

Ruby

D

Swift

Which one of the following devices is most often used for measuring electrical potential difference?

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