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mix Flashcards

1
Q

a thin homogenous metallic plate containing a hole is heated sufficiently to cause expansion

A

increases as the same rate at area of the metal increases

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2
Q

How is the material usage variance defined?

A

(quantity issued - standard quantity) (standard price)

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3
Q

Which statement about area moments of inertia is fake

The area closest to the axis of interest rate are the most significant

A

The area closest to the axis of interest rate are the most significant

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4
Q

Ceramics are mostly

A

all of these

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5
Q

variations of atomic arrangement are known as

A

isomers

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6
Q

For corrosion resistant stainless shell, what minimum percentage of chromium in the alloy is required? `

A

11 %

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7
Q

Which statement about a charge placed on a dielectric is true

A

The charge is confined in the region in which the charge is placed

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8
Q

What is the main reason for using high voltage in the transmission of power in the grid system?
I. To transmit bulk power with minimum line losses
II. Increase system reliability

A

I. To transmit bulk power with minimum losses

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9
Q

Which of the following insulators will be selected for high voltage application

a. strain type
b. disc type
c. suspension type

A

suspension type

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10
Q

The effect of series capacitor on a transmission line is to improve

steady state instability
transient ability

A

steady state instability

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11
Q

By increasing the transformer voltage double of its original value, the same power can be dispatched keeping the line loss

A

one fourth its original value

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12
Q

Compared to Gauss Seidel method, Newton Raphson method takes

A

less number of iterations and more timer per iteration

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13
Q

If f(x) =x when x id from 0 to 2 and f(x) = ex, when x is from 2 to infinity. Find the laplace transform

A

(a/s sqd.) + (e raised to -2s)( e sq/s - 1 - 2/s - 1/ s sq)

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14
Q

After installing a new cable modem and new router, which of the following should be the order to start up the devices?

cable modem, computes, router

A

cable modem, router , then the computer

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15
Q

It represents the distance of a point from the y axis

A

abscissa

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16
Q

The locus of a point which moves so that distance from a fixed point and a fixed line is always equal

A

parabola

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17
Q

The discharge of the centrifugal pump can be throlled without the building up of an excessive pressure or overloading its unit

true or false

A

true

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18
Q

The central processing unit of computer is the combination of

A

arithmetic unit and control unit

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19
Q

Metals of this group are composed of one or more elements such as iron, aluminum copper etc

A

metals

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20
Q

When installing heatsink back on the computer after replacing a failed processor, which of the following must be done during installation

A

Thermal compound must be installed between the processor and the heatsink

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21
Q

How many times the diameter of the largest raceways shall the length of the box be in straight pulls

A

8

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22
Q

Metal used to recover copper from a solution of copper sulphate

A

Fe

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23
Q

Treatment that can increase the fatigue strength of steel

A

shot peening

24
Q

In mix gas such as air, the rms speed of different molecules are

A

inversely proportional to the square root of the molecular mass

25
Q

True for a propeller type impeller centrifugal pump

a. the head develop is due to the push of the vanes and flow is almost entirely axial
b. the head developed cannot be determined by the rotation of the vanes

A

a. the head develop is due to the push of the vanes and flow is almost entirely axial

26
Q

Which one of the following is a light metal?

potassium
mercury
silver

A

potassium

27
Q

If the magnetic flux through a certain region is changing with time

an emf must exist around the boundary
an electric field must exist around the boundary

A

an emf must exist around the boundary

28
Q

device which operates on the principle of Kirchhoff’s Current Law

A

Differential Protective Relay

29
Q

Reason for using such configuration ( DC configuration) instead of AC motor generator sets

A

high torque, good incremental power at low speed and performs well in high speeds

30
Q

What is the main reason that alternating current replaced direct current for general used?

A

AC can be conveniently transformed

31
Q

At a certain location in Australia, it is necessary to supply 300 LW of 60 hz power. How many poles should each of the two machine sin order to concvert 50 hz to 60 hz

10 pole synch motor coupled to 10 pole synch gen
12 pole synch motor coupled to 10 pole synch gen
10 pole synch motor coupled to 12 pole synch gen

A

10 pole synch motor coupled to 12 pole synch gen

32
Q

The magnetic torque exerted on a current carrying loop of wire by a uniform magnetic field b is

max when plane of the loop is perpendicular to b
independent of the orientation of the loop

A

maximum when the plane of the loop is perpendicular to b

33
Q

Most important factor to be considered in the selection of fuel for power plants

I. cost
II. calorific value

A

both I and II

34
Q

When using net present worth calculations to compare two projects, which of the following would invalidate the calculation

differences in the magnitude of projects
evaluating over different time periods
mutually exclusive events

A

evaluating over different time periods

35
Q

Does not threaten the operation of computer

A

firewall

36
Q

deadlock situation that occurs when a program references a difference page for almost every instructions,

thrashing
paging

A

thrashing

37
Q

system where there is flow of matter through the boundary

A

open system

38
Q

What kind of bond do you expect in bronze

A

metallic

39
Q

What is wrong with the program

I cannot be an integer
The value of I cannot be changed in the DO loop

A

The value of I cannot be changed in the DO loop

40
Q

structural elements subjected to torsion develop

A

shearing stress

41
Q

Three moment equation may be used to analyze

continuous beam
beam loaded at the third point

A

continuous beam

42
Q

Which of the following does not transfer to or from a system

moving piston
a membrane that bursts

A

a membrane that bursts

43
Q

Which of the following is not an assumption of EOQ model with no shortage

There is an upper bound on the quantity ordered
there is a positive cost on each unit inventoried

A

there is an upper bound on the quantity ordered

44
Q

Which of the following distribution system gives greater reliability

A

ring system

45
Q

When peace and order problem exist, NGCP issues

A

security red alert

46
Q

RA 7832 concerns on

pilferage

A

pilferage
theft
rationalizing of system loss

47
Q

Strain type insulators are used when
I. The transmission line is dead ended
II. The direction of transmission line changes

A

Either I or II

48
Q

Which of the following interruption events is NOT excluded in the calculation of distribution utility indices

outages that occur in?

A

outages on 34.5 KV lines

49
Q

In PDC,act implemented which of the following is not included

establishment of wholesale
non privatization of at least 70 percent of the total capacity of generating assets of NPC

A

non privatization of at least 70 percent of the total capacity of generating assets of NPC

50
Q

Defects seen by optical or electron microscope

starts with abb

A

abberation

51
Q

An essential part of a large dam and provided

ends with way

A

spillway

52
Q

Which of the following is an example of an integrity violation

a website
a merchant
an unauthorized

A

an unauthorized person intercepts an online communication and changes its content

53
Q

In cold working of metals

A

strength and hardness of steel is increased

54
Q

parameter that can be neglected for a short line

res
ind
cap

A

capacitance

55
Q

Peak load plants are designed to supply power at

A

low capital cost and high operating cost

coaching objectives (3 decks)

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