Free Printable Solar Thermal Technology 1

1.

What is the range of wavelength of visible radiation ?

a)

0.38 to 0.72 micro meter

b)

0.38 to 0.72 nano meter

c)

0.12 to 0.29 micro meter

d)

0.12 to 0.29 nano meter

2.

What is the value of Solar Constant according to WRC ?

a)

1367 w/m square

b)

1267 w/m square

c)

1967 w/m square

d)

1767 w/m square

3.

What is the distance between Sun and Earth ?

a)

$1.5\times10^{11}$ m

b)

$2.5\times10^{11}$ m

c)

$1.5\times10^8$ m

d)

$1.5\times10^3$ m

4.

Select the correct relation between extraterrestrial radiation and time of the year.

a)

$I_{on}=I_{sc}(1+0.033\sin(\frac{360}{365n}))$

b)

I_{on}=I_{sc}(100+0.033\cos(\frac{360n}{365}))

c)

I_{o n} = I_{s c} (1 + 0.033 cos (\frac{3 6 0 n}{3 6 5}))

d)

$Ion=Isc(1+0.066\cos(\ \frac{3}{360n}))$

5.

Which Symbol is used to define declination angle?

a)

$\theta$

b)

$\alpha$

c)

$\beta$

d)

$\delta$

6.

Select the correct equation for declination angle .

a)

$29.05\sin\left[3\ \frac{284+n}{360}\right]$

b)

$23.45\sin\left[360\ \frac{300+n}{365}\right]$

c)

$23.45\sin\left[360\ \frac{284+n}{365}\right]$

d)

$360\sin\left[360\ \frac{284+n}{365}\right]$

7.

What is declination angle ?

a)

The angular displacement of sun from the plane of earth's equator

b)

The angle through which sun must turn to bring the meridian of P directly in line with sun's rays.

c)

Time of delay with respect to solar noon

d)

None of these.

8.

Tick the correct Options ( May be more than one result )

a)

The altitude angle is defined as angle in a vertical plane between sun's rays and horizontal projection of sun's rays

b)

The Zenith angle is defined as angle in a vertical plane between sun's rays and horizontal projection of sun's rays

c)

The zenith angle is the angle between sun's rays and line perpendicular to the horizontal plane at P.

d)

The Altitude angle is the angle between sun's rays and line perpendicular to the horizontal plane at P.

9.

Select the diagram of Pyranometer .

a)

b)

c)

d)

10.

Select the advantages of Flat Plate Collectors (More than one correct options)

a)

Less Heat loss due to conduction.

b)

Can easily acquire 100 degree Celcius

c)

No need of tracking

d)

Absorb direct, diffuse and reflected components of Solar Radiation.

11.

Commonly used materials for Pipe and Fin Absorber plate.

a)

Steel

b)

Plastic

c)

Copper

d)

Tin

12.

What are the desired characteristics of an insulating material ? (More than one option )

a)

Stability at high temperature

b)

High thermal Conductivity

c)

Degassing up to around 200 degree Celcius

d)

No contribution to corrosion

13.

Transmittance of glass depends on _______________________

a)

Manganese Content

b)

Sulphur content

c)

Iron Content

d)

Oxygen Content

14.

What is the Energy Balance Equation of Flat Plate Collector ?

a)

$I_T+A_c\left(\tau\alpha\right)_e=\ Q_{u\ }+\ Q_l$

b)

$I_TA_c\left(\tau\alpha\right)_e=\ Q_{u\ }-\ Q_l$

c)

$I_TA_c\left(\tau\alpha\right)_e=\ Q_{u\ }+\ Q_l$

d)

$I_T-A_c\left(\tau\alpha\right)_e=\ Q_{u\ }-\ Q_l$

15.

The instantaneous Solar Collector efficiency

\eta

is :

a)

$\eta=\ \frac{Q_u}{I_{T\ }A_c}$

b)

$\eta=\ \frac{I_{T\ }A_c}{Q_u}$

c)

$\eta=\ \frac{I_{T\ }A_c}{Q_u}\times Q_l$

d)

$\eta=\ \frac{I_{T\ }A_c}{Q_uQ_l}_{ }$

16.

What is represented using the notation

U_L

?

a)

Back loss Coefficient

b)

Ultra Model Loss Coefficient

c)

Effective Heat loss coefficient

d)

Overall Heat loss Coefficient

17.

Select the factors which includes in thermophysical Properties of FPC

a)

Density, Volume and Melting point

b)

Resistance to UV degradation,degradation due to pollutants in atmosphere and Corrosion resistance

c)

Tensile Strength and Modulus of elasticity

d)

Thermal Conductivity , Heat Capacity and Radiant Heat Transfer

18.

Select the figure of Pipe and Fin (Absorber Plate)

a)

b)

c)

d)

19.

Select the materials that can be used as Cover Plate of FPC ( More than one option )

a)

Transparent Plastic

b)

Copper

c)

Tempered Glass

d)

Aluminium and Copper Alloy

20.

Plate Efficiency Factor is denoted by using :

a)

$\eta$

b)

$P_{\eta}$

c)

$\rho$

d)

$F_p$

Solar Thermal Technology 1

Total questions: 20

Worksheet time: 11mins

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