Answer FOUR of the following SIX questions.
The maximum marks for each question is shown.
DA T...
Engineering, 26.05.2021 19:40, sanchezp0821
Answer FOUR of the following SIX questions.
The maximum marks for each question is shown.
DA TECHNICA
LIBI
1.
a) Define electrical energy.
b) Explain the effect of internal resistance of a battery on the
output voltage.
c) Draw and label a diagram of a moving coil instrument.
d) The No load voltage of a transformer is 460 volts and it
operates at 4% Regulation. Calculate the full load voltage
the transformer.
2.
a) Define electrical power.
b) Explain the function of EACH of the following parts of a
refrigerator
i capillary tube
ii drier
c) Draw and label a diagram of a thermo-couple instrument
d) For the circuit shown in Fig.1. Calculate the
i total capacitance
ii charge.
Buf
4uF
ㅓ ㅏ
2uF
Answers: 2
Engineering, 03.07.2019 14:10, aliceohern
The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite
Answers: 3
Engineering, 04.07.2019 18:10, abdirahmansoloman
Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?
Answers: 1
Computers and Technology, 22.09.2019 04:30
Mathematics, 22.09.2019 04:30
Mathematics, 22.09.2019 04:30
English, 22.09.2019 04:30