ELECTONIC MECHANIC IV SEM
1.
Running total of frequency
is defined as ..........
a)frequency distribution (b)percentage frequency (c)cumulative frequency (d)none of these
2.
Frequency devided by no of
observation is called
...................
a)cumulative frequency (b)relative frequency (c)mass frequency (d)none of these
3.
The method of production that uses a standardised
process of creating interchangeable
Parts
in large quantities in low rates are called ...............
a)mass
production (b)mass distribution (c)mass revision (d)none of these
4. The
friction comes between the surfaces of two bodies before it actually starts moving is ....
a)dynamic
friction (b)static friction (c)kinetic friction (d) rolling friction
5. The friction acting between the two
surfaces when one surface is in steady
motion over the
Other surface is called ..................
a)dynamic
friction (b)static friction (c)kinetic friction (d) rolling friction
6. The frictional force is independent on ..........
a)force (b) friction (c) length (d) area
7. A
plainer table weight is 800kg
moves at a distance of 2m with a coefficient of friction of 3.
What
is the force of friction required to move the table against friction
a)240 (b)280 (c)360 (d)440
8. The force excerted per unit area of substance
is termed as ............
a)density (b)pressure (c)mass (d)volume
9.
The pressure measured
above the absolute zero pressure
is known as ........
(a)gauge
pressure (b)atmospheric pressure (c)absolute pressure (d) none of these
10.
The mass density of a substance is 3000kg/m3. What is the specific gravity.
a)
30 (b) 33.5 (c)35 (d)3
11..................law states that
the temperature remaining constant,volume of a given mass
Of
a gas is inversely proportional to pressure
a)
Pascals
law (b)gas law (c)boyles law (d) none of these
12. Heat is transmitted from one point to the
another through a substance in the ndirection of fall of temperature without actual motion is called
..............
a)transmission (b) conduction (c)convection (d)capacity
13.
The amount of heat required required to raise its temperature by one degree centigrade
Is
called ..........
a)Thermal
conduction (b)radiation (c)specific heat (d)heat capacity
14.The
material shows magnetic property with the help of electric current is called
.............
a)magnetic
field (b) magnetic induction (c)electromagnet (d)permeability
15. The
magnetic substance become a
magnet when it is placed near a magnet is called ........
a)magnetic
field (b) magnetic induction (c)electromagnet (d)permeability
16.The
point through which the resultant if
various particles acting is called
...........
a)ncentre
of gravity (b) centroid
(c)centre of motion (d)none
of these
17.The
continuously flow ` of electrically charged particles through a conductor is called ....
a)ampere (b)current (c)resistance (d)electromotive force
18.The operation of solid substance heating and
cooling for the purpose of obtaining desired property is called
................
(a)annealing (b)normalizing (c)heat treatment (d) none of these
19.Heating
of steel slightely above critical temperature and allowing to cool down very slowly is called
.............
(a)annealing (b)normalizing (c)heat treatment (d) none of these
20.If the block of a pulley is fixed,it is called
.......................
(a)movable
pulley (b)fixed pulley (c)first system of pulley (d) none of these
21.Which
of the following is an insulating material
a)silver (b)carbon (c) rubber (d) silicon
22.
In third system of pulleys there are 6 pulleys. Find out the effort applied to
lift a load of 2400Kg
If
the efficiency of machine is 80%.
a)45.40 (b)
45.54 (c)46.64 (d)47.62
23.Distance
measured parallel to y axis are called ................
a)abscissa (b)ordinate (c)peak line (d) none of these
24.The
centre of gravity of a semicircle with radius
r is ..........
A)3r/4π B)3r/4πr (c)4r/3π (d) none of these
25.The
atmospheric pressure on the gauge scale is marked as ..........
a)180 (b)90 (c)60 (d)0
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