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MCQOPTIONS
This section includes 1728 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1401. |
When not in use, MOSFET pins are kept at the same potential through the use of: |
| A. | shipping foil |
| B. | nonconductive foam |
| C. | conductive foam |
| D. | a wrist strap |
| Answer» D. a wrist strap | |
| 1402. |
D-MOSFETs are sometimes used in series to construct a cascode high-frequency amplifier to overcome the loss of: |
| A. | low output impedance |
| B. | capacitive reactance |
| C. | high input impedance |
| D. | inductive reactance |
| Answer» D. inductive reactance | |
| 1403. |
A "U" shaped, opposite-polarity material built near a JFET-channel center is called the: |
| A. | gate |
| B. | block |
| C. | drain |
| D. | heat sink |
| Answer» B. block | |
| 1404. |
How many storage locations are available when a memory device has twelve address lines? |
| A. | 144 |
| B. | 512 |
| C. | 2048 |
| D. | 4096 |
| Answer» E. | |
| 1405. |
A computerized self-diagnostic for a ROM test uses: |
| A. | the check-sum method |
| B. | a ROM listing |
| C. | ROM comparisons |
| D. | a checkerboard test |
| Answer» B. a ROM listing | |
| 1406. |
Which of the following memories uses a MOSFET and a capacitor as its memory cell? |
| A. | SRAM |
| B. | DRAM |
| C. | ROM |
| D. | DROM |
| Answer» C. ROM | |
| 1407. |
Which of the following best describes nonvolatile memory? |
| A. | memory that retains stored information when electrical power is removed |
| B. | memory that loses stored information when electrical power is removed |
| C. | magnetic memory |
| D. | nonmagnetic memory |
| Answer» B. memory that loses stored information when electrical power is removed | |
| 1408. |
The access time (tacc) of a memory IC is governed by the IC's: |
| A. | internal address buffer |
| B. | internal address decoder |
| C. | volatility |
| D. | internal address decoder and volatility |
| Answer» C. volatility | |
| 1409. |
Most demultiplexers facilitate which of the following? |
| A. | decimal to hexadecimal |
| B. | single input, multiple outputs |
| C. | ac to dc |
| D. | odd parity to even parity |
| Answer» C. ac to dc | |
| 1410. |
Select one of the following statements that best describes the parity method of error detection: |
| A. | Parity checking is best suited for detecting single-bit errors in transmitted codes. |
| B. | Parity checking is best suited for detecting double-bit errors that occur during the transmission of codes from one location to another. |
| C. | Parity checking is not suitable for detecting single-bit errors in transmitted codes. |
| D. | Parity checking is capable of detecting and correcting errors in transmitted codes. |
| Answer» B. Parity checking is best suited for detecting double-bit errors that occur during the transmission of codes from one location to another. | |
| 1411. |
Which type of PLD should be used to program basic logic functions? |
| A. | PLA |
| B. | PAL |
| C. | CPLD |
| D. | SLD |
| Answer» C. CPLD | |
| 1412. |
Once a PAL has been programmed: |
| A. | it cannot be reprogrammed. |
| B. | its outputs are only active HIGHs |
| C. | its outputs are only active LOWs |
| D. | its logic capacity is lost |
| Answer» B. its outputs are only active HIGHs | |
| 1413. |
The complex programmable logic device (CPLD) contains several PLD blocks and: |
| A. | field-programmable switches |
| B. | AND/OR arrays |
| C. | a global interconnection matrix |
| D. | a language compiler |
| Answer» D. a language compiler | |
| 1414. |
PLAs, CPLDs, and FPGAs are all which type of device? |
| A. | SLD |
| B. | PLD |
| C. | EPROM |
| D. | SRAM |
| Answer» C. EPROM | |
| 1415. |
As additional resistors are added to a series circuit, the total circuit resistance increases. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1416. |
Which circuit is known as a current-to-voltage converter? |
| A. | a |
| B. | b |
| C. | c |
| D. | d |
| Answer» B. b | |
| 1417. |
The exclusive-NOR (XNOR) gate is simply an OR gate followed by a NOT gate. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1418. |
The sum of all the voltage drops in a series circuit equals the source voltage. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1419. |
To find the total current in series, add the individual currents. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1420. |
Ground is the reference point from which voltages are measured in an electronic circuit. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1421. |
The voltage across R1 is 10 volts. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1422. |
In a series circuit, the current flowing out of a resistor won't always equal the current flowing into that resistor. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1423. |
The total power dissipated in a series resistive circuit exceeds the sum of the resistor powers. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1424. |
A series circuit provides only one path for current between two points. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1425. |
If four 90 resistors are connected in series across an 18 V source, the current equals ___. |
| A. | 50 mA |
| B. | 0.2 A |
| C. | 5 A |
| D. | 20 A |
| Answer» B. 0.2 A | |
| 1426. |
1.2 V, +15 V, and 6 V batteries are connected in series. The magnitude of total voltage is _________. |
| A. | 7.8 V |
| B. | 10.2 V |
| C. | 22.2 V |
| D. | 1.3 V |
| Answer» B. 10.2 V | |
| 1427. |
If a 220 , a 100 , and a 180 resistor are connected in series across a 12 V source, the circuit current equals ___. |
| A. | 41.67 A |
| B. | 120 mA |
| C. | 500 A |
| D. | 24 mA |
| Answer» E. | |
| 1428. |
A 10 k capacitive reactance equals a 100 S capacitive susceptance. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1429. |
How many basic types of resistors exist? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» C. 3 | |
| 1430. |
With a complex circuit, a supply source senses: |
| A. | open circuit components |
| B. | when voltages need to be increased |
| C. | only a single resistive connection |
| D. | when complex currents are needed |
| Answer» D. when complex currents are needed | |
| 1431. |
Which is the most important step utilized when measuring resistors? |
| A. | use the highest possible scale |
| B. | keep test leads short |
| C. | zero the meter before using |
| D. | remove power from the circuit |
| Answer» E. | |
| 1432. |
Components designed to oppose the flow of current are called: |
| A. | insulators |
| B. | conductors |
| C. | resistors |
| D. | heat exchangers |
| Answer» D. heat exchangers | |
| 1433. |
A color code of orange, orange, orange is for what ohmic value? |
| A. | 22 kilohms |
| B. | 3300 ohms |
| C. | 44000 ohms |
| D. | 33 kilohms |
| Answer» E. | |
| 1434. |
If a 100 resistance is connected to a 100 capacitive reactance in a series RC circuit, the impedance equals 200 . |
| A. | True |
| B. | False |
| Answer» C. | |
| 1435. |
One problem with mechanically variable resistors is noticeable in audio circuits as: |
| A. | scratchy noise |
| B. | lack of bass response |
| C. | variable volume |
| D. | too much treble response |
| Answer» B. lack of bass response | |
| 1436. |
If the bandwidth of an RC low-pass filter is 20 kHz, the cutoff frequency is also 20 kHz. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1437. |
When a series RC circuit is used as a low-pass filter, the output is taken from across the capacitor. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1438. |
The current lags the source voltage in a series RC circuit. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1439. |
The output voltage from an RC high-pass filter increases as the frequency decreases. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1440. |
If the frequency increases in a parallel RC circuit, the phase angle decreases. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1441. |
A conductor's cross-sectional area in circular mils for inch is: |
| A. | 500 cmils |
| B. | 100,000 cmils |
| C. | 1,000,000 cmils |
| D. | 500,000,000 cmils |
| Answer» D. 500,000,000 cmils | |
| 1442. |
The output of an exclusive-OR (XOR) gate is 1 only when the inputs are different. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1443. |
The voltage gain of an OTA can be calculated using the formula |
| A. | <img src="/_files/images/basic-electronics/basics/mca20_1002a1.gif" alt="mca20_1002a1.gif" align="absmiddle"> |
| B. | <img src="/_files/images/basic-electronics/basics/mca20_1002b1.gif" alt="mca20_1002b1.gif" align="absmiddle"> |
| C. | <img src="/_files/images/basic-electronics/basics/mca20_1002c1.gif" alt="mca20_1002c1.gif" align="absmiddle"> |
| D. | <img src="/_files/images/basic-electronics/basics/mca20_1002d1.gif" alt="mca20_1002d1.gif" align="absmiddle"> |
| Answer» C. <img src="/_files/images/basic-electronics/basics/mca20_1002c1.gif" alt="mca20_1002c1.gif" align="absmiddle"> | |
| 1444. |
If the output of a gate is OFF when the inputs are the same, and ON when they are different, the gate must be an exclusive-OR. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1445. |
The output of a NAND gate is the same as the inverted output of an AND gate. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1446. |
If both inputs are required to be ON for the output to be ON, the gate must be an AND gate. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 1447. |
Logic gate circuits contain predictable gate functions that open their outputs. |
| A. | True |
| B. | False |
| Answer» C. | |
| 1448. |
In the classic three-op-amp instrumentation amplifier, the differential voltage gain is usually produced by the |
| A. | first stage |
| B. | second stage |
| C. | mismatched resistors |
| D. | output op-amp |
| Answer» B. second stage | |
| 1449. |
The primary function of the oscillator in an isolation amplifier is to |
| A. | convert dc to high-frequency ac |
| B. | convert dc to low-frequency ac |
| C. | rectify high-frequency ac to dc |
| D. | produce dual-polarity dc voltages for the input to the demodulator |
| Answer» B. convert dc to low-frequency ac | |
| 1450. |
Refer to Figure 20-2. This circuit is a setup for |
| A. | an antilog amplifier |
| B. | a constant-current source |
| C. | an instrumentation amplifier |
| D. | an isolation amplifier |
| Answer» C. an instrumentation amplifier | |