Free Printable Technokruti 2K22 Brain Buzzer

1.

Give the name of gas produced by refrigeratioin and colour industries.

a)

CFC (Chlorofluorocarbons)

b)

NITROGEN

c)

OXYGEN

d)

METHENE

2.

what is approximate value of nitrogen gas in Atmosphere?

a)

72%

b)

60%

c)

78%

d)

22%

3.

Waste heat recovery is possible in…....

a)

bike

b)

boiler

c)

car

d)

non of the above

4.

According to the Law of conservation of energy…

a)

Energy cannot be destroyed

b)

Energy cannot be produced

c)

Energy can be transformed

d)

All of the above

5.

Which type of energy resource is never exhausting?

a)

Solar energy

b)

Natural gas

c)

Petroleum

d)

None of above

6.

Fossil fuels like coal, petroleum, and natural gas are which type of energy sources?

a)

Conventional sources

b)

Renewable sources

c)

Alternative sources

d)

None

7.

Solar cell is made of….

a)

Conductor

b)

Transistor

c)

Semi Transistor

d)

Semi Conductor

8.

Log x² =……

a)

Log₂ (x)

b)

(A) Log (2x)

c)

2log (x)

d)

(log x)²

9.

Log (sin² x + cos²x)=........

a)

0

b)

1

c)

-1

d)

2

10.

The ………… vector represents a unit in the direction of x-axis

a)

(0, 1,0)

b)

(1,1,1)

c)

(0,0,1)

d)

(1,0,0)

11.

1m³ = ……… liter

a)

10

b)

100

c)

1000

d)

10000

12.

Which of the following is not a fundamental Physical Quantity?

a)

Density

b)

Length

c)

Mass

d)

Time

13.

First law of Newton gives the definition of….

a)

Mass

b)

Force

c)

Velocity

d)

Weight

14.

Gravitational force is due to….

a)

Weight

b)

Shape

c)

Mass

d)

Magnetic field

15.

Heat can travel from one end to another in a copper rod due to…

a)

Heat radiation

b)

Heat conduction

c)

Heat convection

d)

None of these

16.

Atom bomb is based on principle of…..

a)

Nuclear fusion

b)

Nuclear fission

c)

Both nuclear fusion and fission

d)

None

17.

Prime mover is a device which converts natural resources into ……..

a)

Nuclear energy

b)

Mechanical energy

c)

potential energy

d)

Kinetic energy

18.

Gauge pressure is measured with respect to…

a)

Absolute zero pressure

b)

Atmospheric pressure

c)

vacuum pressure

d)

All of these

19.

Which of the following is correct?

a)

Absolute pressure = Gauge pressure + Atmospheric pressure

b)

Gauge pressure = Absolute pressure + Atmospheric pressure

c)

Atmospheric pressure = Absolute pressure + Gauge pressure

d)

Absolute pressure Gauge pressure - = Atmospheric pressure

20.

………. means rate of doing work.

a)

Energy

b)

Force

c)

Power

d)

Pressure

21.

Any change that a system undergoes from one equilibrium state to another is known as

a)

Path

b)

Process

c)

Cycle

d)

All of these

22.

Absolute zero temperature is……

a)

0˚C

b)

273 C

c)

-273°C

d)

100°C

23.

Which property is called Intensive property?

a)

Viscosity

b)

Kinetic energy

c)

Internal energy

d)

Volume

24.

Zeroth law of thermodynamics forms the basis of measurement of the following

a)

Heat exchange

b)

Work

c)

Pressure

d)

Temperature

25.

Which source of energy is known as non renewable source?

a)

Fossil fuel

b)

Nuclear

c)

CNG (Compressed natural gas)

d)

All of these

26.

Which of these is an artificial fuel?

a)

Petroleum

b)

Wood

c)

Petrol

d)

Peat

27.

In the polytropic process pVⁿ = C, if n = ∞, the process is called

a)

Isochoric

b)

Isobaric

c)

Isothermal

d)

Adiabatic

28.

When water is heated with the rise of temperature, it consume......

a)

Latent heat

b)

Enthalpy

c)

Sensible heat

d)

None of the these

29.

Constant pressure cycle is also known as…

a)

Otto cycle

b)

Carnot cycle

c)

Diesel cycle

d)

Rankine cycle

30.

Which one is a link between piston and crank?

a)

Connecting rod

b)

Piston pin

c)

Push rod

d)

Crankshaft

31.

Which engine produces more power for the same compression ratio?

a)

4-stroke diesel engine

b)

4-stroke petrol engine

c)

2-stroke diesel engine

d)

2-stroke petrol engine

32.

Centrifugal pump is a type of

a)

Rotodynamic pump

b)

Positive displacement pump

c)

Rotary pump

d)

Hand pump

33.

The ratio of the discharge pressure to the inlet pressure of air is called

a)

Compression ratio

b)

Expansion ratio

c)

Compressor efficiency

d)

Volumetric efficiency

34.

The centrifugal compressor is suitable for producing

a)

High pressure

b)

Medium pressure

c)

low pressure

d)

All of the above

35.

The universal coupling is a type of…….

a)

Flexible coupling

b)

Rigid coupling

c)

both A and B

d)

None of the above

36.

The energy absorbed by the brake is

a)

Kinetic energy

b)

Pressure energy

c)

Internal energy

d)

None of the above

37.

The idler pulley is used in belt drive to…..

a)

Increase velocity ratio

b)

Decrease velocity ratio

c)

Increase angle of contact

d)

Decrease angle of contact

38.

As compared to belt drive, the chain drive transmits..

a)

More power

b)

Less power

c)

same power

d)

None of the above

39.

…….. is the ability of a material to resist deformation under stress.

a)

Strength

b)

Stiffness

c)

Hardness

d)

Brittleness

40.

Brass is fundamentally alloy of ……

a)

Copper and zinc

b)

Copper and nickel

c)

copper and tin

d)

Copper, zinc and molybdenum

Technokruti 2K22 Brain Buzzer

Total questions: 40

Worksheet time: 14mins

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