111. In order to achieve high accuracy, the slide wire of a potentiometer should be

**As long as possible**- As short as possible
- Neither too small nor too large
- Very thick

112. Murray loop test can be used for the location of

- Ground fault on a cable
- Short circuit fault on a cable
**Both the ground fault and the short-circuit fault**- None of these

113. The following are prerequisites of a good weighing scale except

- Have a rechargeable battery
- Easy to clean the baby tray
**Should be made of non-stick plastic**- Reproducibility of weights measured

114. The multiplier and the meter coil in a voltmeter are in

**Series**- Parallel
- Series- parallel
- Parallel-series

115. An ammeter is a

**Secondary instrument**- Absolute instrument
- Recording instrument
- Integrating instrument

116. In the majority of instruments, damping is provided by

- Fluid friction
- spring
**Eddy currents**- All

117. The household energy meter is

- An indicating instrument
- A recording instrument
**An integrating instrument**- None of these

118. Which of the following devices may be used for extending the range of instruments?

- Shunts
- Multipliers
- Current transformers
**All of these**

119. A null type of instrument as compared to deflection type of instrument has

**A higher accuracy**- A lower sensitivity
- Faster response
- All of these

120. Match the following order with their irregularities:

**Order ** **Irregularities**

- First-order – Feed marks of the cutting tool
- Second-order – Lack of straightness of guideways
- Third-order – Rupture of material during chip removal
- Fourth-order – Vibrations

**Correct one is ….**

**a b c d**

- 3 2 1 4
**2 4 1 3**- 3 2 4 1
- 3 1 2 4

121. Which of the following is a destructive method in measuring the surface finish?

- Diffraction technique
- Micro interferometer
**Taper sectioning**- None of these

122. Which is Not a valid reason for the packaging of food items?

- Security and portion control
- Marketing and Convenience
- Protection and Information transmission
**None of these**

123. The accuracy of a deadweight tester is affected by

- The friction force between the piston and cylinder
- Uncertainty of the value of effective area of piston.
- Uncertainty of the value of gravitational constant.
**All of these**

124. A thermometer reads 92.35 °C and the static correction given in the correction curve is -0.07 ° what will be the true value of the temperature?

- 35 °C
**28 °C**- 42 °C
- None of these

125. Manometers are generally used to measure

**Pressure**- Voltage
- Temperature
- Humidity

126. A student measured the length of a rod and wrote it as 3.50 cm. which instrument did he use to measure it?

- A metre scale.
**A Vernier caliper where the 10 divisions in Vernier scale matches with 9 division in the main scale and main scale has 10 divisions in 1 cm.**- A screw gauge having 100 divisions in the circular scale and pitch as 1 mm.
- A screw gauge having 50 divisions in the circular scale and pitch as 1 mm.

127. The diameter of a cylinder is measured using a Vernier caliper with no zero error. It is found that the zero of the Vernier scale lies between 5. 10 cm and 5.15 cm of the main scale. The vernier scale has 50 divisions equivalent to 2.45 cm. the 23rd division of the Vernier scale exactly coincides with one of the main scale divisions. The diameter of the cylinder is

- 112 cm
**123 cm**- 136 cm
- 148 cm

128. Which of the following term (s) are associated with measuring devices?

- Sensitivity
- Damping
**Both a and b**- None of these

129. Pitot tube used the principle of

**Bernoulli’s theorem**- Eddy theorem
- Rankine theorem
- All of these

130. A chronometer is a device

**To measure very light weights.**- To measure very heavyweights.
- To measure pressure.
- To measure error

131. Kelvin’s bridge consists of

**Double bridge**- Single bridge
- Half-bridge
- Three fourth bridge

132. Megger can be used for verifying the electrical insulation level of

- Passive components such as resistance, capacitor, and inductance
**Devices such as motor, cable, etc.**- Solid-state devices
- Liquid crystal devices

133. What should be used to clean the baby weighing scale?

- 5% bacillocid
**Soap and water**- Alcohol
- Betadine – Iodine

134. Which of the following is not related to the drunken thread?

- Periodic pitch error
**Progressive pitch error**- Erratic pitch error
- Irregular pitch error

135. If work allowance is less than 0.09 mm then how much wear allowance is given to the GO gauge?

- 5 % gauge allowance
- 10% gauge allowance
**No allowance**- None of these

136. What is a blank diameter?

**MAX thread pitch diameter – 0.002 inches.**- MAX thread pitch diameter + 0.002 inches.
- MAX thread pitch diameter – 0.003 inches.
- MAX thread pitch diameter + 0.003 inches

137. The voltage sensitivity of a galvanometer is given by

**Answer: B**

138. Which of the following devices convert pressure to displacement?

- Diaphragm
- Bellows
- Capsule
**Both a and c**

139. A single-sensor, contact-type ultrasonic flaw detector uses a frequency of 330 kHz. When testing a specimen, and echo from a flaw is recorded 0.05 mass after the transmitted pulse. If the velocity of sound in the test object is 6.0 km/s then the flaw is at a depth of

**15 cm**- 10 cm
- 20cm
- 5 cm

140. The bridge method commonly used for finding mutual inductance is

**Heaviside Campbell bridge**- Schering bridge
- De sauty bridge
- Wien bridge

141. A 100 W, 1 W resistor and an 800 W, 2 W resistor are connected in series. The maximum dc voltage that can be applied continuously to the series circuit without exceeding the power limit of any of the resistors is

- 90 V
- 50 V
**45 V**- 40 V

142. What is meant by P, D, S, and A in the PDSA cycle?

- Progress Development Study Act
**Plan Do Study Act**- Project Development Study Act
- Prevention Do Study Act

143. The jaws of a vernier caliper touch the inner wall of calorimeter without any undue pressure. The position of zero of the Vernier scale on the main scale reads 4.48. the 4^{th} of Vernier scale division is coinciding with any main scale division. Vernier constant of calipers is 0.01 cm. the actual internal diameter of the calorimeter, when it is observed that the vernier scale has a zero error of -0.05 cm is

- 57 cm
**35 cm**- 59 cm
- 58 cm

144. If the value of moment arm is zero, then torque produced will be

- 1
**Zero**- Doubled
- Halved

145. According to the equation of continuity, when waterfalls its speed …… while it’s cross-sectional area decreases.

**Increases**- Decreases
- Remains constant
- Varies with height

146. A galvanometer with a full-scale current of 10 mA has a resistance of 1000 ῼ The multiplying power (the ratio of measured current to galvanometer current) of 100ῼ shunt with this galvanometer is

- 110
- 100
**11**- 10

147. What is the common mistake which has occurred when the weighing machine displays the alarm signal ‘err’’?

- There is no charge.
- There is a need to change the load cell.
- Zeroing has not been done
**The weight is in excess of the weight limit permissible by that particular machine**

148. The measured value of resistance is 10.27 ohm, whereas its value is of 10.22 ohm. What is the absolute error of the measurement?

- 20.01 ohm
**0.05 ohm**- 20.49 ohm
- -0.03 ohm

149. When checked with an ohmmeter, an open resistor reads

- High but within tolerance
- Low but not zero
- Zero
**Infinite**

150. Who gave the law of gravitation?

- Hubble
- Einstein
- Maxwell
**Newton**

151. Which of the following are not a unit of time?

- Second
**Light year**- Year
- None of these

152. The number of significant figures in 0.700 m^{2} is

- 1
- 2
**3**- 4

153. The ratio of the dimensions of Planck’s constant and that of the moment of inertia is the dimensions of

**Frequency**- Velocity
- Angular momentum
- Time

154. The square root of the product of inductance and capacitance has the dimensions of

- Mass
- Length
**Time**- No dimensions

155. A car covers the first 2 km of the total distance of 4 km with a speed of 30 km/h and the remaining distance of 2 km with a speed of 20 km/h. the average speed of the car is

**20 km/h**- 24 km/h
- 30 km/h
- 40 km/h

156. Which of the following is a polar vector?

- Angular velocity
- Angular acceleration
- Torque
**Linear momentum**

157. A Diwali rocket is ejecting 0.05 kg of gases per second at a velocity of 400 ms^{-1}. The acceleration force on the rocket is

- 20 dyne
**20 N**- 22 N
- 4000 N

158. The driver of a car suddenly sees a broad wall in front of him. He should

**Brake sharply**- Turn sharply
- Both a and b
- None of these

159. The kinetic energy of a body becomes four times its original value. The new linear momentum of the body will be

- ½ time
- 4 times
- 3 times
**2 times**

160. The moment of momentum is called

- Impulse
- Torque
**Angular momentum**- None of these

161. A flywheel is a homogeneous disc of mass 72 kg and radius 50 cm. when it is rotating at the rate of 70 rpm, its kinetic energy is

- 121 J
**242 J**- 284 J
- 484 J

162. The acceleration of the centre of mass of a uniform solid disc rolling down an inclined plane of angle θ is

- g sinθ /2
- g sinθ /3
- g sinθ
**2g sinθ /3**

163. The acceleration due to gravity at the centre of earth is

**Zero**- 45 ms
^{-2} - 6 ms
^{-2} - 8ms
^{-2}

164. For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is

- 1/√2
- √2
**1/2**- 2

165. The force of gravitation is

- Repulsive
**Conservative**- Electrostatic
- Non-conservative

166. The escape velocity of a particle of mass ‘m’ varies as

- m
^{-1} **m**^{0}- m
- m
^{2}

167. For an ideal liquid

- The shear modulus is infinite
**The shear modulus is zero**- The bulk modulus is zero
- None of these

168. S.I. unit of surface tension is

- Nm
**Nm**^{-1}- Nm
^{-2} - N
^{-1}m

169. If longitudinal strain for a wire is 0.03 and its Poisson’s ratio is 0.5, then its lateral strain is

- 0.4
**0.015**- 0.003
- 0.0075

170. Two soap bubbles have radii in the ratio of 2:1. What is the ratio of excess pressure inside them?

- 2:1
**1:2**- 1:4
- 4:1

### Read previous parts: ॥ Part-1॥ Part-2॥

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