Nimi online Mock Test Electrician 2nd year Workshop Calculation 2022
NIMI Online mock test Electrician 2nd year Workshop Calculation and Science Questions Answers for ITI NCVT Online exam. NIMI Mock Question bank Electrician 2nd year Workshop Calculation and Science pdf 2022. NCVT Online exam preparation Electrician trainees can fully utilise this Nimi Mock question bank for NCVT Online exam.
1.Which is the law of friction?
a.Friction force is independent over the area
and shape of contacting surfaces
b.Frictional force is inversely proportional to
the normal reaction
c.Frictional force acts in the same direction of
motion/td>
d.Frictional force is not a dependent on nature
of contacting surface
Answer- a
2. What is the direction of frictional force
against a motional object?
a.Inclined to the object
b.Opposite to the object
c.Parallel to the object
d.Perpendicular to the object
Answer- b
3. Which force is directly proportional to the
normal reaction between contacting surfaces?
a.Pulling force
b.Pushing force
c. Frictional force
d.Allied force
Answer- c
4. Which one of the following acts in between
the wheels and roads, if vehicles are able to run on
roads?
a.Friction
b.Corrosion
c.Erosion
d.Motion
Answer- a
5.Which is useful friction?
a.Rings in the cylinder
b.Crank shaft bearings
c.Wheel hub bearings
d.Brake shoe lining
Answer- d
6. Which is wasteful friction?
a. Rear axle gear
b. Tyres on the floor
c. Brake shoe lining
d. Clutch lining
Answer- a
7. Which is depends on the frictional force?
a. Type of metals
b.Contact surfaces
c. Quantity of the contacting metals
d. Quality of metals
Answer- b
8.How co-efficient of friction is expressed?
a.It is expressed as the ratio of force and area
b. It is the ratio between frictional force and
normal reaction
c. It is expressed as the ratio of weight and
normal reaction
d. It is expressed as the ratio of weight and
normal reaction
Answer- b
9. Which symbol is used to denote co-efficient
of friction?
a. α (Alpha)
b. μ (Meu)
c. β (Beta)
d. γ (Gamma)
Answer- b
10. What kind of friction is called if two objects
are in contact at rest?
a.Sliding friction
b. Rolling friction
c.Static friction
d. Angular friction
Answer- c
11.Which is the correct statement?
a.Limiting friction is equal to sliding friction
b. Rolling friction is more than the sliding
friction
c. Sliding friction is always less than limiting
friction/td>
d. Limiting friction is always less than sliding
friction
Answer- c
12. What is the co-efficient of friction if the
angle of friction isq?
a. Sin θ
b. Cos θ
c. Tan θ
d.Cot θ
Answer- c
13.What is the purpose of a lubricant?
a. To increase the pressure
b. To increase friction
c.01:50:00
d. To reduce pressure
Answer- c
14. What type of lubricant is used in wick feed
lubrication system
a. Lub-oil
b. Grease
c. Thread forming थ्रेड फोलमिंग
d. Cutting oil
Answer- a
15.Which lubrication system is provided with a
ring oiler to splash lub-oil continuously around the
parts?
a. Gravity feed system
b. Pressure feed system
c. Splash feed system
d. Force feed system
Answer- c
16.Which one is the three types of lubrication
system in general use?
a. Force feed system, speed feed system,
frictional feed system
b. Velocity feed system, Speed feed system,
Frictional feed system
c. Gravity feed system, force feed system,
splash feed system
d.Splash feed system, Frictional force system,
Speed feed system
Answer- c
17. Which lubrication system employs oil holes
in the machines?
a. Gravity feed system
b. Force feed systemर
c. Splash feed system
d. Velocity feed system
Answer- a
18. Which is used to reduce the friction in
machine parts?
a. Kerosene
b.Petrol
c. Water
d. Lubricants
Answer- d
19. Which is the main purpose of using the
lubricant oil in engine moving parts
a. To increase the efficiency
b. To reduce friction
c.To improve carrying capacity
d. To improve the durability
Answer- b
20.Which is the correct statement?
a.Lubricants acts to prevent corrosion
b. Lubricants acts as a seal
c. Lubricants acts as a fuel
d. Lubricants acts as a filter
Answer- a
21. What causes the efficiency of a machine by
maintaining the lubrication?
a. Increases
b. Decreases
c. Remains same
d. Does not affected
Answer- a
22. What is the co-efficient of friction if a force
of 30 N is required to move a body of mass 35 kg
(Assume 1kg=10N)?
a. 8.57
b. 0.082
c. 0.0857
d. 0.0085
Answer- c
23. How much force is required to move an
object weights 20 kg, if the value of m = 0.24?
a. 4.8 kg
b. 83.33 kg
c. 1.2 kg
d.0.48 kg?
Answer- c
24. What is weight of an object could be moved
by a force of 30 kg if co-efficient of friction is
0.0125?
a. 80 kg
b. 2430 kg
c. 72000 kg
d. 2400 kg
Answer- d
25. How much force is required to just slide a
20 kg object lying on a horizontal table if the m is
0.2?
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