The heating capacity of continuous reheating furnace depends upon the

An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.

A

Walking beam

B

Shaft

C

Tunnel

D

Rotary hearth

Consider the following statements for an induction furnace: 1. High-frequency current is generally used for the furnace working. 2. There is less loss of alloying elements due to oxidation. 3. Pronounced stirring action of molten metal occurs inside the furnace. 4. Slag cover is essential for the efficient working of the furnace. Which of the above statements are correct?

A

1, 3 and 4 only

B

2, 3 and 4 only

C

1, 2 and 3 only

D

1, 2, 3 and 4

Reheating furnace (pusher type) is used for heating

A

Ingots

B

Slabs

C

Steel coils

D

Steel sheets

Consider the following statements regarding continuous beam: 1. A beam is said to be a continuous beam if it is supported on more than two supports. 2. A continuous beam is a statically indeterminate structure. 3. The degree of indeterminacy depends upon the number of supports and also on the nature of the supports. Which of the above statements are correct?

A

1 and 2 only

B

2 and 3 only

C

1, 2 and 3

D

1 and 3 only

The bypass factor (B. P. F.) in case of sensible heating of air is (Where td₁ = Dry bulb temperature of air entering the heating coil, td₂ = Dry bulb temperature of air leaving the heating coil, and td₃ = Dry bulb temperature of heating coil)

A

(td₂ - td₃)/(td₃ - td₁)

B

(td₃ - td₂)/(td₃ - td₁)

C

(td₃ - td₁)/(td₂ - td₃)

D

(td₃ - td₁)/(td₃ - td₂)

The bypass factor (B.P.F.) in case of sensible heating of air is (Where td₁ = Dry bulb temperature of air entering the heating coil, td₂ = Dry bulb temperature of air leaving the heating coil and td₃ = Dry bulb temperature of heating coil)

A

$$\frac{{{\text{t}}{{\text{d}}_2} - {\text{t}}{{\text{d}}_3}}}{{{\text{t}}{{\text{d}}_3} - {\text{t}}{{\text{d}}_1}}}$$

B

$$\frac{{{\text{t}}{{\text{d}}_3} - {\text{t}}{{\text{d}}_2}}}{{{\text{t}}{{\text{d}}_3} - {\text{t}}{{\text{d}}_1}}}$$

C

$$\frac{{{\text{t}}{{\text{d}}_3} - {\text{t}}{{\text{d}}_1}}}{{{\text{t}}{{\text{d}}_2} - {\text{t}}{{\text{d}}_3}}}$$

D

$$\frac{{{\text{t}}{{\text{d}}_3} - {\text{t}}{{\text{d}}_1}}}{{{\text{t}}{{\text{d}}_3} - {\text{t}}{{\text{d}}_2}}}$$

If the amplitude or oscillation of a simple pendulum is very small, then its time period of oscillation
1. depends on the length of the pendulum, L.
2. depends on the acceleration due to gravity, g.
3. depends upon the mass of the bob of the pendulum, m.
4. does not depend upon the amplitude of the pendulum, A.
Select the correct answer:

A

1, 2 and 3

B

1, 2 and 4

C

2, 3 and 4

D

1 and 4

Given below are four jumbled sentences. Out of the given options pick the one that gives their correct order. A. So, in the agrarian era, you destroy your enemy’s productive capacity by burning his crops or fields. B. Now, in the information era, destroying the enemy’s productive capacity means destroying their information infrastructure. C. You battle with your enemy by destroying the enemy’s productive capacity, which will be different depending upon the foundation of economy. D. But in the industrial era, ending productive capacity meant bombing of the factories that are located in cities and main industrial areas.

A

ACDB

B

BDAC

C

ACBD

D

CADB

Another form of Rolle’s theorem for the continuous condition is _____ b) f is continuous on c) f is continuous on d) f is continuous on

A

f is continuous on

B

a,a-h

C

a,a-h

D

a,a-h

The heating capacity of muffle furnace depends on the

A

Surface area & emissivity of the stock

B

Properties of the muffle wall (temperature, area, emissivity)

C

Both A & B

D

Neither A nor B

The heating capacity of continuous reheating furnace depends upon the

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