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GATE 2022 Rapid Revision Weekly Quiz 4

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Question 1

A nozzle is discharging steam through critical pressure ratio. What is the effect on the nozzle mass flow rate if the back pressure is further decreased?

Question 2

1.5kW work input per ton of refrigeration is required to maintain the temperature of -40^oC in the refrigerator. Find COP of the cycle when the heat extracted from refrigerated space is 3.516kW

Question 3

Which micrometer is used for measuring the span between the teeth of a gear?

Question 4

Sphere 1 with a diameter of 0.1 m is completely enclosed by another sphere 2 of diameter 0.4 m. The view factor F₁₂ is _________.

Question 5

Permanent deformation of material with respect to time due to constant load and variable temperature is known as _________.

Question 6

In case of steady uniform laminar flow through pipes,Discharge (Q) is equal to

Question 7

Which one of the following expresses the sensitiveness of a governor________?

Question 8

In a multiplate clutch, the ration of plates on driver to that of the driven shaft is 2 while their difference is 2. The number of pairs of friction surface in contact is?

Question 9

Under certain cutting conditions, doubling the cutting speed reduces the tool life to

of the original. Taylor’s tool life index (n) for this tool-work piece combination will be __________.

Question 10

A thin cylindrical pressure vessel with closed-ends is subjected to internal pressure. The ratio of circumferential (hoop) stress to the longitudinal stress is

Question 11

In an ideal refrigeration cycle having COP 5.5 , if the cooling capacity was 5 KW, then the power input to the compressor in KW would be?

Question 12

A real gas obeys P(v - b) = RT, then which of the following relations is true?

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