Stadia method is based on the principle that ratio of perpendicular to the base is constant.

In stadia method, diaphragm in tachometer is provided with there stadia hairs and stadia hair reading is taken by looking through a diaphragm.

A

True

B

False

For transistor action (a) Base, emitter, and collector regions should have similar size and doping concentrations. (b) The base region must be very thin and lightly doped. (c) The emitter-base junction is forward biased and the base-collector junction is reverse biased. (d) Both the emitter-base junction as well as the base-collector junction are forward biased. Which one of the following pairs of statements is correct?

A

(d), (a)

B

(a), (b)

C

(b), (c)

D

(c), (d)

interface Base{ boolean m1 (); byte m2(short s);}

which two code fragments will compile?

1. interface Base2 implements Base {}2. abstract class Class2 extends Base { public boolean m1(){ return true; }}3. abstract class Class2 implements Base {}4. abstract class Class2 implements Base { public boolean m1(){ return (7 > 4); }}5. abstract class Class2 implements Base { protected boolean m1(){ return (5 > 7) }}

A

1 and 2

B

2 and 3

C

3 and 4

D

1 and 3

E

4 and 5

Which of the following is based on the discovery method of learning? I. Principle of activity II. Principle of logical thinking III. Principle of purposeful experiences IV. Principle of discovering for alternatives

A

I, II and III

B

I, II, III and IV

C

I, III and IV

D

II, III and IV

Group I shows different heat addition processes in power cycles. Likewise, Group II shows different heat removal processes. Group III lists power cycles. Match items from Groups I, II and III. Group I Group II Group III P. Pressure constant S. Pressure constant 1. Rankine cycle Q. Volume constant T. Volume constant 2. Otto cycle R. Temperature constant U. Temperature constant 3. Carnot cycle 4. Diesel cycle 5. Brayton cycle

A

P – S – 5, R – U – 3, P – S – 1, Q – T - 2

B

P – S – 1, R – U – 3, P – S – 4, P – T - 2

C

R – T – 3, P – S – 1, P – T – 4, Q – S - 5

D

P – T – 4, R – S – 3, P – S – 1, P – S - 5

Which of the following are major principles of leading?
1. Principle of motivation
2. Principle of continuous development
3. Principle of harmony of objectives
4. Principle of open competition
5. Principle of communication clarity
Select the correct answer:

A

1, 2, 3, 5

B

1, 2, 3, 4, 5

C

1, 3, 4, 5

D

1, 3, 5

Optical fibre is based on which of the following principles? a. Principle of reflection of light b. Principle of refraction of light c. Principle of total internal reflection d. Principle of dispersion of light

A

a, b and c

B

Only c

C

b and d

D

Only d

A right prism of the base equilateral triangle is cut into n equal pieces with a line parallel to base in such a way that base surface area of all the pieces becomes 8 times of the base area of the original prism. If the side of the base of the original prism is 4 cm and volume is 96√3 cm3, then what is the lateral surface area of each piece?

A

36 cm²

B

48 cm²

C

32 cm²

D

42 cm²

Which of the following is/are the principles of Play-way method of teaching? I. Principle of fulfilment of desires II. Principle of unfolding innate potentials III. Principle of natural instincts IV. Principle of responsibility

A

I, II, III and IV

B

I, II and III

C

II, III and IV

D

I, II and IV

Determine the correctness or otherwise of the following Assertion (A) and the Reason (R).
Assertion: The association constant in water for the G-C base pair is three times lower than that for the A-T base pair.
Reason: There are three hydrogen bonds in the G-C base pair and two in the A-T base pair.

A

Both (A) and (R) are true and (R) is the correct reason for (A)

B

(A) is false, but (R) is true

C

Both (A) and (R) are false

D

Both (A) and (R) are true and (R) is not the correct reason for (A)

Stadia method is based on the principle that ratio of perpendicular to the base is constant.

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