Which one is not an isolating material?
A. Rubber
B. Cork
C. Steel bar
D. Felt

1 Answer

Answer :

C. Steel bar

Related questions

Description : The vibration isolating materials are A. Aluminum B. Mild Steel C. Rubber, Cork D. None

Last Answer : C. Rubber, Cork

Description : A vibrating machine of 100 kg is mounted on a rubber pad which has stiffness of 500 N/m. Determine force transmitted to the foundation if the unbalanced force 500 N acts on it. The frequency ratio (ω/ω n ) is 1.5 and ξ = 0.5 A. 461.62 N B. 400.23 N C. 450 N D. Insufficient data

Last Answer : A. 461.62 N

Description : where springs of low damping are required for the purpose of vibration isolation, it will be most desirable to use A) Metallic springs B) Rubber pad C) Air springs D) Neoprene pads

Last Answer : A) Metallic springs

Description : __________ possesses viscoelastic properties. (A) Cork (B) Glass (C) Graphite (D) Rubber

Last Answer : (D) Rubber

Description : A cantilever shaft having 50 mm diameter and a length of 300mm has a disc of mass 100 kg at its free end. The Young’s modulus for the shaft material is 200 GN/m^2. Determine the static deflection of shaft in mm. A 0.144 B 0.244 C 0.344 D 0.444

Last Answer : A 0.144

Description : A cantilever shaft having 50 mm diameter and length of 300 mm has a disc of mass 100 kg at its free enD. The Young’s modulus for the shaft material is 200 GN/m 2 . Calculate the natural longitudinal frequency in Hz. A. 575B. 625 C. 525 D. 550

Last Answer : A. 575

Description : The resistance to the motion of the body is provided by ______ a) Medium of vibration b) Speed of vibration c) Length of the material d) External friction

Last Answer : a) Medium of vibration

Description : A cantilever shaft having 50 mm diameter and a length of 300 mm has a disc of mass 100 kg at its free end. The Young’s modulus for the shaft material is 200 GN/m 3 . Determine the static deflection of the shaft in mm. a) 0.147 b) 0.213 c) 0.132 d) 0.112

Last Answer : a) 0.147

Description : A cantilever shaft having 50 mm diameter and a length of 300 mm has a disc of mass 100 kg at its free end. The Young’s modulus for the shaft material is 200 GN/m 2 . Determine the frequency of transverse vibrations of the shaft. a) 31 b) 35 c) 37 d) 41

Last Answer : d) 41

Description : A cantilever shaft having 50 mm diameter and length of 300 mm has a disc of mass 100 kg at its free end. The Young’s modulus for the shaft material is 200 GN/m 2 . Calculate the natural longitudinal frequency in Hz. a) 575 b) 625 c) 525 d) 550

Last Answer : a) 575

Description : A cantilever shaft has a diameter of 6 cm and the length is 40cm, it has a disc of mass 125 kg at its free end. The Young’s modulus for the shaft material is 250 GN/m2. Calculate the static deflection in nm. a) 0.001 b) 0.083c) 1.022 d) 0.065

Last Answer : a) 0.001

Description : Specify the material of construction suitable for handling concentrated HNO3 at 100°C. (A) High silicon iron, Kel-F and Teflon (B) Tin and wood (C) Silicone rubber (D) Stainless steel

Last Answer : (A) High silicon iron, Kel-F and Teflon

Description : Which of the following is the most elastic material? (A) Plastic (B) Glass (C) Steel (D) Rubber

Last Answer : (C) Steel

Description : Liners of a ball mill are never made of (A) Lead (B) Alloy steel (C) Rubber or ceramic material (D) Cast iron

Last Answer : (A) Lead

Description : Which of the following material of construction may be recommended by a chemical engineer for handling a gaseous chlorine (dry or wet) stream in a fluid flow system? (A) High silicon iron, silicon rubber ... Mild steel and stainless steel (C) Cast iron, tin and aluminium (D) Copper, nickel and Monel

Last Answer : (A) High silicon iron, silicon rubber, Kel-F and Teflon

Description : A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material? (A) Steel (B) Glass (C) Rubber (D) Brass

Last Answer : Option A

Description : Which of the following material is more elastic? (a) Rubber (b) Glass (c) Steel (d) Wood

Last Answer : (c) Steel

Description : Are you feeling a mental rut, as many of us are still self isolating and socially distancing? How are you trying to keep your mind sharp and hone social skills?

Last Answer : Hone social skills? You guys have social skills?!

Description : What are the two types reporting isolating events?

Last Answer : Need answer

Description : What is the result of isolating x2 in the equation below x2 plus (y - 5)2 30?

Last Answer : Need answer

Description : What is the result of isolating y2 in the equation below 9x2 plus 7y2 42?

Last Answer : Need answer

Description : If you're asked to solve a system of equations in which there is no linear equation to start with you can sometimes begin by isolating and substituting a variable that is squared in both equations?

Last Answer : 1

Description : Szent-Gyorgyi was awarded a Nobel Prize for isolating vitamin C from (a) oranges (b) lemon (c) amla (d) chillies (paprika)

Last Answer : Ans:(d)

Description : A short in the shunt field of a DC motor is best located by _____________. A. visual inspection of the commutator B. applying AC voltage to each field coil and measuring the voltage drop across ... using a growler and hacksaw blade D. isolating each coil from the others and using a megohmmeter

Last Answer : Answer: B

Description : The antenna efficiency of an HF grounded vertical antenna can be made comparable to that of a half-wave antenna A. By installing a good ground radial system B. By isolating the coax shield from ground C. By shortening the vertical D. By lengthening the vertical

Last Answer : A. By installing a good ground radial system

Description : What is the Difference Between "Insulating", "Isolating", and "Shielded Winding" Transformers?

Last Answer : Insulating and Isolating transformers are identical. These terms are used to describe the isolation of the primary and secondary windings, or insulation between the two. A shielded winding transformer, ... are connected to each other electrically, are not of the insulating or isolating variety.

Description : How can the antenna efficiency of an HF grounded vertical antenna be made comparable to that of a half-wave antenna? A. By lengthening the vertical B. By installing a good ground radial system C. By shortening the vertical D. By isolating the coax shield from ground

Last Answer : B. By installing a good ground radial system

Description : Point out the wrong statement. a) Securing data sent to, received from, and stored in the cloud is the single largest security concern b) The problem with the data you store in the cloud is that ... the cloud from direct client access is to create layered access to the data d) All of the mentioned

Last Answer : One and only approach to isolating storage in the cloud from direct client access is to create layered access to the data

Description : What are isolating valves?

Last Answer : Answer: Gate, ball, plug, piston, diaphragm, butterfly, pinch.

Description : What are isolating valves?

Last Answer : Answer: Gate, ball, plug, piston, diaphragm, butterfly, pinch.

Description : What type of maintenance involves isolating equipment troubles and replacing defective parts?

Last Answer : Corrective maintenance.

Description : What is the difference between “Insulating,” “Isolating,” and “Shielded Winding” transformers?

Last Answer : Insulating and isolating transformers are identical. These terms are used to describe the isolation of the primary and secondary windings, or insulation between the two. A shielded transformer is ... secondary are connected to each other electrically, are not of the insulating or isolating variety.

Description : Draw a neat sketch of earth fault protection of auxiliary circuit of electric loco. State the function of relay and isolating resistance.

Last Answer : Ans: Earth fault protection for auxiliaries in Loco: Function of relay: The earth fault occurring anywhere in the auxiliary circuit gets monitored by the relay which acts to trip the main CB. Function of ... star point to earth through a high resistance so that the relay operation is avoided.

Description : Rap fans of Reddit, What is a “I felt that” bar you heard?

Last Answer : Ill Mind of Hopsin 5

Description : A steel bar 5 m × 50 mm is loaded with 250,000 N. If the modulus of elasticity of the material is 0.2  MN/mm2  and Poisson's ratio is 0.25, the change in the volume of the bar is:  (A) 1.125 cm3 (B) 2.125 cm3 (C) 3.125 cm3 (D) 4.125 cm

Last Answer : (C) 3.125 cm

Description : Cutter bar is made up of which material a) High grade steel. b) Low carbon alloy steel. c) Platinum. d) High speed tool steel

Last Answer : High grade steel

Description : The material used for making torsion bar is (a) Steel (b) Cast iron (c) High carbon steel (d) All of the above

Last Answer : (a) Steel

Description : Often an unbalance of forces is produced in rotary or reciprocating machinery due to the ______ * 1 point (A) Centripetal forces (B) Centrifugal forces (C) Friction forces (D) Inertia forces

Last Answer : (D) Inertia forces

Description : If the spring mass system with m and spring stiffness k is taken to very high altitude, the natural frequency of longitudinal vibrations * 1 point (A) increases (B) decreases (C) remain unchanged (D) may increase or decrease depending upon the value of the mass

Last Answer : (C) remain unchanged

Description : The speed at which the shaft runs so that the additional deflection from the axis of rotation of the shaft becomes infinite, is known as _________ * 1 point (A) Whirling speed (B) Rotational speed (C) Stabilizing speed (D) Reciprocating speed

Last Answer : (A) Whirling speed

Description : Frequency is equal to ______. * 1 point (A) time period (B) 1/time period (C) *time period (D) /time period

Last Answer : (B) 1/time period

Description : What are deterministic vibrations? * (A)Vibrations caused due to known exciting force (B)Vibrations caused due to unknown exciting force (c) Vibrations which are aperiodic in nature (D) None of the above

Last Answer : (A)Vibrations caused due to known exciting force

Description : Equilibrium Method is in accordance with which of the following principle? * 1 point (A) Taylor's principle (B) D'Alembert's principle (C) Energy conservation principle (D) None of the above

Last Answer : (B) D'Alembert's principle

Description : According to which method, maximum kinetic energy at mean position is equal to maximum potential energy at extreme position? * 1 point (A) Energy method (B) Rayleigh's method (C) Equilibrium method (D) All of the above

Last Answer : (B) Rayleigh's method

Description : A mass of 1 kg is attached to two identical springs each with stiffness k = 20 kN/m as shown in the figure. Under frictionless condition, the natural frequency of the system in Hz is close to * 1 point (A) 32 (B) 23 (C) 16 (D) 11

Last Answer : (A) 32

Description : What are discrete parameter systems? *1 point (A) Systems which have infinite number of degree of freedom (B) Systems which have finite number of degree of freedom (C) Systems which have no degree of freedom (D) None of the above

Last Answer : (B) Systems which have finite number of degree of freedom

Description : What is meant by critical damping coefficient? * 1 point (A) Frequency of damped free vibrations is less than zero (B). The motion is a periodic in nature (C). Both a. and b. (D). None of the above

Last Answer : (C). Both a. and b.

Description : The equivalent stiffness of spring connected in parallel having stiffnesses k1 and k2 can be written as * 1 point (A)(1/k1) + (1/k2) (B) (1/k1) - (1/k2) (C) k1 + k2 (D) None of the above

Last Answer : (C) k1 + k2