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Consider the following statements in connection with deflection-type and null-type instruments: 1. Null-type instruments are more accurate than the deflection-type ones. 2. Null-type of instrument can be highly sensitive compared to a deflection-type instrument. 3. Under dynamic conditions, null-type instruments are less preferred to deflection-type instruments. 4. Response is faster in null-type instruments as compared to deflection-type instruments. Which of the above statements are correct?
Consider the following statements for deflection and null type instruments: 1. Deflection type of instruments are more accurate than null type of instruments. 2. Deflection type of instruments can be highly sensitive as compared with the null type of instruments. 3. Null type of instruments are more suitable for measurements under dynamic conditions than deflection type of instruments. Which of the above statements are not correct?
Which of the following assumptions are correct for the lateral torsional buckling of an I-section beam? 1. The beam is initially distorted 2. Its behaviour is elastic 3. It is loaded by equal and opposite end moments in the plane of the web
Assertion A: Loss of head at a sudden expansion of a pipe is larger than that at a sudden contraction. Reason R: Separation of flow occurs at sudden contractions Which of the following is correct?
The accompanying image shows a large cube made of dark and white small sugar cubes. Small cubes of the diagonally arranged row of the bottom surface of the large cube, small cubes of the row with one face on the right-hand surface of the large cube, small cubes of the row with one face on the front surface of the large cube, and small cubes of the column with one face on the top of large cube surface are all dark. Select the number of small white cubes of the large cube.
A displacement sensor (a dial indicator) measures the lateral displacement of a mandrel mounted on the taper hole inside a drill spindle. The mandrel axis is an extension of the drill spindle taper hole axis and the protruding portion of the mandrel surface is perfectly cylindrical measurements are taken with the sensor placed at two positions P and Q as shown in the figure. The readings are recorded as Rx = maximum deflection minus minimum deflection, corresponding to sensor position at X, over one rotation. If RP = RQ > 0, which one of the following would be consistent with the observation?
In VHF spectrum Analyzer, two types of frequency instabilities which will cause difficulties when narrow frequency range are displayed are known as (a) Short-term instability (b) Phase-noise (c) Correlation-noise (d) Long-term instability Choose the correct option
Which of the following statements is true? A. For instability, at least one joint of the structure should be able to displace without causing a change in length of all the members. B. For instability, at least one joint of the structure should be able to displace without causing a change in length of at least one of the members.
What is the equation to find the rebound deflection if the relationship between intermediate deflection reading Di and the final deflection reading Df is Di-Df<0.025 mm?
The following 2 statements (S1 and S2) pertain to design of flexible pavements: S1: Most flexible pavement design procedures are based on Benkelman beam deflection measurements S2 : Elastic deflection is a practical non-destructive measure of pavement stiffness which relates well to fatigue failure.