Electrical Engineering

6 followers study24x7

08 Apr 2025 11:46 AM study24x7

Which type of system puts the user into direct conversation with the computer through a keyboard?

A

Real time processing

B

Interactive computer

C

Batch processing

D

Time sharing

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Electrical Engineering

6 followers study24x7

08 Apr 2025 11:44 AM study24x7

The section of the CPU that selects, interprets and sees to the execution of program instructions

A

Memory

B

Register unit

C

Control unit

D

ALU

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Electrical Engineering

6 followers study24x7

08 Apr 2025 11:43 AM study24x7

The radian of a number system

A

Is variable

B

Has nothing to do with digit position value

C

Equals the number of its distinct counting digits

D

Is always an even number

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Electrical Engineering

6 followers study24x7

07 Apr 2025 11:32 AM study24x7

A program component that allows structuring of a program in an unusual way is known as

A

Correlation

B

Coroutine

C

Diagonalization

D

Quene

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Electrical Engineering

6 followers study24x7

07 Apr 2025 11:30 AM study24x7

A name applied by Intel corp. to high speed MOS technology is called

A

HDLC

B

LAP

C

HMOS

D

SDLC

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Electrical Engineering

6 followers study24x7

07 Apr 2025 11:29 AM study24x7

Any type of storage that is used for holding information between steps in its processing is

A

CPU

B

Primary storage

C

Intermediate storage

D

Internal storage

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Electrical Engineering

6 followers study24x7

04 Apr 2025 12:20 PM study24x7

Which access method is used for obtaining a record from a cassette tape?

A

Direct

B

Sequential

C

Random

D

All of the above

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Electrical Engineering

6 followers study24x7

04 Apr 2025 12:20 PM study24x7

Binary numbers need more places for counting because

A

They are always big numbers

B

Any no. of 0's can be added in front of them

C

Binary base is small

D

0's and l's have to be properly spaced apart

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Electrical Engineering

6 followers study24x7

04 Apr 2025 12:19 PM study24x7

The time for which a piece of equipment operates is called

A

Seek time

B

Effective time

C

Access time

D

Real time

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Electrical Engineering

6 followers study24x7

28 Mar 2025 11:03 AM study24x7

In Δ-connected generator, all of the phase voltages are

A

zero

B

equal in magnitude

C

one-third of total

D

one-sixth of total

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Electrical Engineering

6 followers study24x7

27 Mar 2025 11:34 AM study24x7

In a Y-connected source feeding Δ -connected load,

A

each phase of the load has one-third of the full line voltage across it

B

each phase of the load has two-thirds of the full line voltage across it

C

each phase of the load has the full line voltage across it

D

each phase of the load has a voltage across it equal to √3

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Electrical Engineering

6 followers study24x7

27 Mar 2025 11:32 AM study24x7

The most common type of ac motor is the

A

single-phase induction motor

B

two-phase induction motor

C

three-phase induction motor

D

two-phase squirrel-cage motor

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Electrical Engineering

6 followers study24x7

27 Mar 2025 11:31 AM study24x7

In a Y-connected circuit, between each line voltage and the nearest phase voltage, there is a phase angle of

A

0°

B

30°

C

60°

D

120°

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Electrical Engineering

6 followers study24x7

26 Mar 2025 12:23 PM study24x7

In a certain Y-Y system, the source phase currents each have a magnitude of 9 A. The magnitude of each load current for a balanced load condition is

A

3 A

B

6 A

C

9 A

D

27 A

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Electrical Engineering

6 followers study24x7

26 Mar 2025 12:22 PM study24x7

Polyphase generators produce simultaneous multiple sinusoidal voltages that are separated by

A

certain constant phase angles

B

certain constant frequencies

C

certain constant voltages

D

certain constant currents

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Electrical Engineering

6 followers study24x7

26 Mar 2025 12:22 PM study24x7

If in a Y-connected ac generator, each phase voltage has a magnitude of 90 VRMS, what is the magnitude of each line voltage?

A

0 V

B

90 V

C

156 V

D

180 V

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Electrical Engineering

6 followers study24x7

25 Mar 2025 11:48 AM study24x7

Compare the total copper cross sections in terms of current-carrying capacity for a single-phase and a three-phase 120 V system with effective load resistance of 15 Ω.

A

single-phase 32 A; three-phase 16 A

B

single-phase 16 A; three-phase 8 A

C

single-phase 8 A; three-phase 4 A

D

single-phase 16 A; three-phase 0 A

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Electrical Engineering

6 followers study24x7

25 Mar 2025 11:47 AM study24x7

A three-phase generator is connected to three 90 Ω load resistors. Each coil generates 120 V ac. A common neutral line exists. How much current flows through the common neutral line?

A

0 A

B

1.33 A

C

3.99 A

D

2.66 A

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Electrical Engineering

6 followers study24x7

25 Mar 2025 11:47 AM study24x7

A single-phase sinusoidal voltage of 120 V is connected to a 90 Ω load. Current in the circuit is

A

13.3 mA

B

133 mA

C

1.33 A

D

6.2 A

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Electrical Engineering

6 followers study24x7

24 Mar 2025 01:11 PM study24x7

A two-phase generator is connected to two 90 Ω load resistors. Each coil generates 120 V ac. A common neutral line exists. How much current flows through the common neutral line?

A

1.33 A

B

1.88 A

C

2.66 A

D

1.77 A

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