Explore topic-wise InterviewSolutions in Current Affairs.

(C) Reducing the exposed surface area of the body (e.g by curling up) allows humans to maintain the same body temperature while reducing the energy lost by radiation.

 Heat radiated by body remains unchanged even after change in room temperature. 

Energy lost by the radiation depends upon the surface area. 

From Wien’s law λ_mT = constant

Correct option is: (D) 0

Correct option is: (A) 2, 3, 4

Correct option is: (C) z = 1

Correct option is: (A) \(\frac{1}{\sqrt{14}},\frac{3}{\sqrt{14}},\frac{2}{\sqrt{14}}\)

Correct option is: (D) 9

Correct option is: (A) \(\frac{2\pi}{3}\)

Correct option is: (C) 17

Correct option:

(C) e^x/x

Correct option is: (C) \(3\overrightarrow{i}+4\overrightarrow{j}\)

Correct option is: (C) 0

Correct option is: (B) \(\frac{1}{\sqrt{2}},\frac{1}{\sqrt{2}},0\)

Correct option is: (A) sec² x

Correct option:

(A) 2√x + c

Correct option is: (A) z = 4x + y

Correct option is: (C) \(\frac{1}{\sqrt{x}}\)

Correct option is: (B) \(\frac{\overrightarrow{i}+2\overrightarrow{j}+3\overrightarrow{k}}{\sqrt{14}}\)

Correct option is: (B) \(\frac{166}{27}\)

Correct option is: (A) \(-\frac{c^2}{x^2}\)

Correct option is: (C) \(\frac{x-1}{9}=\frac{y-2}{18}=\frac{z+1}{24}\)

Correct option is: (B) 3x + 5y + 7z = 10

Correct option is: (C) 6a + 2b + c = 0

A mathematical artifice consisting of an impulse of infinite amplitude and zero width, and having an area of unity. Note: The unit impulse is useful for the mathematical expression of the impulse response, i.e., the transfer function, of a device. Synonym Dirac delta function.

Positive attitude leads to positive body language.

Correct answer is (c) 1/2

Bituminous covered jute. 

The real measure of a shock’s intensity lies in the amount of current (amperes) forced through the body and not the voltage. any electrical device used on a house wiring circuit can under certain conditions transmit a fatal current. It’s the electrical current that does the damage. Current equals voltage divided by resistance (1=V/R) but the resistance of the human body varies so widely it is impossible to state that one voltage is dangerous’ and another is safe. In studio we have to always connect all the equipment correctly to avoid any type of disturbed sound. All the power cables and power boards should be well maintained otherwise they can cause short circuits. We have to always follow the fire safely norms. All the fire extinguishers should be maintained and in working condition. To avoid ear damage we should use ear protector, to protect eyes used eye protector. We should also take a short break if we are working for long hours.

(i) Since, the team will not include any girl, therefore, only boys are to be selected. 5 boys out of 7 boys can be selected in ⁷C₅ ways. Therefore, the required number of ways 

= ⁷C₅ (7!/5!2!) = (6 x 7)/2 = 21

(ii) Since, at least one boy and one girl are to be there in every team. Therefore, the team can consist of 

(a) 1 boy and 4 girls 

(b) 2 boys and 3 girls 

(c) 3 boys and 2 girls 

(d) 4 boys and 1 girl. 

1 boys and 4 girls can be selected in ⁷C₁ × ⁴C₄ ways. 

2 boys and 3 girls can be selected in ⁷C₂ × ⁴C₃ ways. 

3 boys and 2 girls can be selected in ⁷C₃ × ⁴C₂ ways. 

4 boys and 1 girls can be selected in ⁷C₄ × ⁴C₁ ways. 

Therefore, the required number of ways = ⁷C₁ × ⁴C₄ + ⁷C₂ × ⁴C₃ + ⁷C₃ × ⁴C₂ + ⁷C₄ × ⁴C₁ 

= 7 + 84 + 210 + 140 = 441 

(iii) Since, the team has to consist of at least 3 girls, the team can consist of 

(a) 3 girls and 2 boys, or (b) 4 girls and 1 boy. 

Note that the team cannot have all 5 girls, because, the group has only 4 girls. 

3 girls and 2 boys can be selected in ⁴C₃ × ⁷C₂ ways. 

4 girls and 1 boys can be selected in ⁴C₄ × ⁷C₂ ways. 

Therefore, the required number of ways 

= ⁴C₃ × ⁷C₂ + ⁴C₄ × ₇C₁ = 84 + 7 =91.

P(an ace card) = 4C₁/52C₁ = 4/52 = 1/13

(b) P(a black card) = 26C₁/52C₁ = 26/52 = 1/2

Given 4 girls and 7 boy's 

(i) no girls:

Total number of selection = ⁴C₀ x ⁷C₅ = 1 x (7!/(5! x 2!) = [(7 x 6)/2] = 21 ways

(ii) atleast 1 boy and 1 girls 

Girls × boys 

(a) ⁴C₁ × ⁷C₄ = 7 

(b) ⁴C₂ × ⁷C₃ = 84. 

(c) ⁴C₃ × ⁷C₂ = 210 

(d) ⁴C₄ × ⁷C₁ = 140 

Total number of selection 441 ways .

Fuses are rated by current capacity (Amperes) and voltage. They are usually slightly larger than the required current. That is the current requirement of the equipment is 0.75 that of fuse. There are two fundamental types of fuse failure-Fatigue-cause by normal power cycling of the apparatus. This cause the fuse to heat slightly each time it is turn on which progressively weakens the fuse. Indicated by a clean operative in the fuse element/wire. Probly safe to replace the full if ensure do not replace until checked by a qualified technician

Catastrophic- Caused by a fault condition of the apparatus. Indicated by severe ‘blacking’ of the fuse.

Total number of selection = ⁴C₀ x ⁷C₅ = 1 x (7!/(5! x 2!) = [(7 x 6)/2] = 21 ways

Correct option is: (C) sinA.cosB + cosA.sinB

Type of polar pattern of microphone 

1. Omni Directional 

2. Bidirectional 

3. Cordiod 

4. Hypercordiod 

5. Super-Cardioid

Patterns:

1. Omni Directional 

2. Bidirectional 

3. Cardioid

4. Hyper cardioid 

5. Super cardioid

cultural diversity is the quality of diverse or different cultures. People from different cultural society are coming to work in one organization. So differences of their food habits. Their clothing their language and even their physical appearances are very prominent. So we have to respect each other and each other’s cultural difference.

Correct option is: (A) cosA.cosB + sinA.sinB

Back emf is not produced as the flux formed by the current has no variation. So current control by inductor in DC is not possible.

Diaphragm and Voice coil.

In TV blanking means ‘going black’ as part of the video signal, the blanking voltage is at the black level. Video voltage at the black level cuts off the beam currents in the picture tube to black out the light from screen. The purpose of providing the blanking pulses is to make invisible the retraces of the scanning process. The horizontal blanking pulse at the frequency of 15625Hz. Blanks out the retrace from right to left for each line. The vertical blanking pulses at 50 Hz blank out the retrace from bottom to top for each field.

Always try to avoid sitting while working with bare components since moving around in a chair can generate more than adequate static charge to damage electronic components. It is highly recommended not to work in a any carpeted area when touching bare components.

In a regular or balanced basket or matt weave, the number of floats in the warp and the weft is equal in all the boxes created; 

examples are 2X2, 3X3, 4X4 basket weaves, etc. 

If the warp and weft floats are unequal in the different boxes, then an irregular or unbalanced basket or matt weave results; 

examples are 2X3, 3X4, 4X2 basket weaves, etc.

Inventory in sports refers to sports goods, equipment, materials stocked with the purpose of using it in the future or in a systematic manner.

 When a phase and neutral comes into direct contact in a household circuit or when two-phase come in contact or when a phase and neutral comes into direct contact in a distribution line.

• Direction changes.
• Magnitude changes.

• Compactness. 
• One of the most important factors to consider in a home printer is how much room it will take up in your office. 
• Value. 
• Paper and ink capacity. 
• Scanning and copying. 
• Photo and color printing. 
• Stylish design.
• All-in-one printers.

a. Step down Transformer.

b. \(\cfrac{I_p}{I_s}\) = \(\cfrac{V_s}{V_p}\)

V_p = \(\cfrac{V_s\times I_s}{I_p}\) = \(\cfrac{200 \times 1}{0.5}\)

= 400 V

c. Mutual Induction:

Keep two sets of coils side by side. When the direction of current flow or its intensity is changed in one, the magnetic flux around it also changes. An emf and current is induced in the secondary coil. This phenomenon is called mutual induction.

The power in the primary and secondary.of a transformer is equal. Current is more where voltage is less because P = VI. Thick wires are needed to flow more quantity of current. In the primary of step up and in the secondary of step down, quantity of current is more.

Field magnet is used as rotor in the power generators.