- The chemical reaction between the gases inside the bulb
- The compressed gases inside rushing out suddenly
- The air outside rushing in to fill the vacuum inside the bulb
- None of these
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When a vibrating tuning fork is placed on a table, a loud sound is heard. This is due to :?
Answer: Option 3 When a vibrating tuning fork is placed on a table, then a large sound is heard due to the entire system begins vibrating and forces surrounding air...
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When a live conductor of public electric supply breaks down and touches the earth which of the following will happen?
Answer: Option 1 Let'
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When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the?
Answer: Option 4 Let'
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Sound travels with a different speed in media. In what order does the velocity of sound increase in these media?
Answer: Option 3 Increasing order of velocity of sound in the following media is as follows : Air, water and iron.
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Which motor is preferred for use in mines where explosive gases exist?
Answer: Option 1 Let'
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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)?
Answer: Option 2 The bypass factor (B. P. F.) in case of sensible heating of air is (td₃ - td₂)/(td₃ - td₁) Where, td₁ = Dry bulb temperature of air entering the...
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Relative humidity is given by (where pv = Partial pressure of water vapour, pb = Barometric pressure, ps = Pressure of saturated air, pd = Pressure at dry bulb temperature, pw = Saturation pressure corresponding to wet bulb temperature, and μ = Degree of saturation)?
Answer: Option 2 Relative humidity is given by μ/[1 - (1 - μ) (Ps/Pb)] where pv = Partial pressure of water vapour, pb = Barometric pressure, ps = Pressure of saturated air, pd...
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The bypass factor, in case of sensible cooling of air, is given by (where td₁ = Dry bulb temperature of air entering the cooling coil, td₂ = Dry bulb temperature of air leaving the cooling coil, and td₃ = Dry bulb temperature of the cooling coil)?
Answer: Option 2 The bypass factor, in case of sensible cooling of air, is given by (td₂ -td₃)/( td₁ -td₃) where td₁ = Dry bulb temperature of air entering the cooling...
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Directions : Following question consists of a statement followed by three arguments I, II and III . You have to decide which of the arguments is a STRONG arguments and which is a WEAK Argument. Statement : Should coal engines be replaced by electric engines in trains Arguments : I. Yes. Coal engines cause a lot of pollution. II. Yes. Electric engines are good on performance, easy to operate and low on maintenance. III. No. India does not produce enough electricity to fulfil its domestic needs also.?
Answer: Option 2 Clearly, electric engines shall be smoke-free and thus not cause pollution as the coal engines. They also run at higher speeds and perform better. Thus, both I...
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The property of a material due to which it breaks with little permanent distortion, is called?
Answer: Option 1 A material is brittle if, when subjected to stress, it breaks without significant plastic deformation. Brittle materials absorb relatively little energy prior to fracture
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